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Marrero AD, Cárdenas C, Castilla L, Ortega-Vidal J, Quesada AR, Martínez-Poveda B, Medina MÁ. Antiangiogenic Potential of an Olive Oil Extract: Insights from a Proteomic Study. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:13023-13038. [PMID: 38809962 PMCID: PMC11181319 DOI: 10.1021/acs.jafc.3c08851] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2023] [Revised: 05/13/2024] [Accepted: 05/15/2024] [Indexed: 05/31/2024]
Abstract
Extra virgin olive oil (EVOO), a staple of the Mediterranean diet, is rich in phenolic compounds recognized for their potent bioactive effects, including anticancer and anti-inflammatory properties. However, its effects on vascular health remain relatively unexplored. In this study, we examined the impact of a "picual" EVOO extract from Jaén, Spain, on endothelial cells. Proteomic analysis revealed the modulation of angiogenesis-related processes. In subsequent in vitro experiments, the EVOO extract inhibited endothelial cell migration, adhesion, invasion, ECM degradation, and tube formation while inducing apoptosis. These results provide robust evidence of the extract's antiangiogenic potential. Our findings highlight the potential of EVOO extracts in mitigating angiogenesis-related pathologies, such as cancer, macular degeneration, and diabetic retinopathy.
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Affiliation(s)
- Ana Dácil Marrero
- Departamento
de Biología Molecular y Bioquímica, Facultad de Ciencias,
Andalucía Tech, Universidad de Málaga, E-29071 Málaga, Spain
- Instituto
de Investigación Biomédica y Plataforma en Nanomedicina-IBIMA
Plataforma BIONAND (Biomedical Research Institute of Málaga), E-29071 Málaga, Spain
- CIBER
de Enfermedades Raras (CIBERER), Instituto
de Salud Carlos III, E-28029 Madrid, Spain
| | - Casimiro Cárdenas
- Departamento
de Biología Molecular y Bioquímica, Facultad de Ciencias,
Andalucía Tech, Universidad de Málaga, E-29071 Málaga, Spain
- Servicios
Centrales de Apoyo a la Investigación (SCAI), Universidad de Málaga, E-29071 Málaga, Spain
| | - Laura Castilla
- Departamento
de Biología Molecular y Bioquímica, Facultad de Ciencias,
Andalucía Tech, Universidad de Málaga, E-29071 Málaga, Spain
- Instituto
de Investigación Biomédica y Plataforma en Nanomedicina-IBIMA
Plataforma BIONAND (Biomedical Research Institute of Málaga), E-29071 Málaga, Spain
| | - Juan Ortega-Vidal
- Departamento
de Química Inorgánica y Orgánica, Campus de Excelencia
Internacional Agroalimentaria ceiA3, Universidad
de Jaén, Jaén E- 23071, Spain
| | - Ana R. Quesada
- Departamento
de Biología Molecular y Bioquímica, Facultad de Ciencias,
Andalucía Tech, Universidad de Málaga, E-29071 Málaga, Spain
- Instituto
de Investigación Biomédica y Plataforma en Nanomedicina-IBIMA
Plataforma BIONAND (Biomedical Research Institute of Málaga), E-29071 Málaga, Spain
- CIBER
de Enfermedades Raras (CIBERER), Instituto
de Salud Carlos III, E-28029 Madrid, Spain
| | - Beatriz Martínez-Poveda
- Departamento
de Biología Molecular y Bioquímica, Facultad de Ciencias,
Andalucía Tech, Universidad de Málaga, E-29071 Málaga, Spain
- Instituto
de Investigación Biomédica y Plataforma en Nanomedicina-IBIMA
Plataforma BIONAND (Biomedical Research Institute of Málaga), E-29071 Málaga, Spain
- CIBER
de
Enfermedades Cardiovasculares (CIBERCV), Instituto de Salud Carlos III, E-28029 Madrid, Spain
| | - Miguel Ángel Medina
- Departamento
de Biología Molecular y Bioquímica, Facultad de Ciencias,
Andalucía Tech, Universidad de Málaga, E-29071 Málaga, Spain
- Instituto
de Investigación Biomédica y Plataforma en Nanomedicina-IBIMA
Plataforma BIONAND (Biomedical Research Institute of Málaga), E-29071 Málaga, Spain
- CIBER
de Enfermedades Raras (CIBERER), Instituto
de Salud Carlos III, E-28029 Madrid, Spain
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Henríquez S, Valdivia MJ, Mainigi M, Villarroel C, Velasquez L, Strauss Iii JF, Devoto L. The role of estrogen metabolites in human ovarian function. Steroids 2024; 203:109368. [PMID: 38278282 DOI: 10.1016/j.steroids.2024.109368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Revised: 01/15/2024] [Accepted: 01/16/2024] [Indexed: 01/28/2024]
Abstract
Estrogens produced by the ovary play diverse roles in controlling physiological changes in the function of the female reproductive system. Although estradiol acts through classical nuclear receptors, its metabolites (EMs) act by alternative pathways. It has been postulated that EMs act through paracrine-autocrine pathways to regulate key processes involved in normal follicular growth, corpus luteum (CL) development, function, and regression. The present review describes recent advances in understanding the role of EMs in human ovarian physiology during the menstrual cycle, including their role in anovulatory disorders and their action in other target tissues.
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Affiliation(s)
- Soledad Henríquez
- Institute for Maternal and Child Research (IDIMI), Faculty of Medicine, University of Chile, Santiago, Chile; Institute of Interdisciplinary Research in Biomedical Sciences (I3CBSEK), Faculty of Health Sciences, SEK University, Santiago, Chile.
| | - Maria Jose Valdivia
- Institute for Maternal and Child Research (IDIMI), Faculty of Medicine, University of Chile, Santiago, Chile
| | - Monica Mainigi
- Department of Obstetrics and Gynecology and Center for Research on Reproduction and Women's Health, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Claudio Villarroel
- Institute for Maternal and Child Research (IDIMI), Faculty of Medicine, University of Chile, Santiago, Chile
| | - Luis Velasquez
- Institute of Interdisciplinary Research in Biomedical Sciences (I3CBSEK), Faculty of Health Sciences, SEK University, Santiago, Chile
| | - Jerome F Strauss Iii
- Department of Obstetrics and Gynecology and Center for Research on Reproduction and Women's Health, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Luigi Devoto
- Institute for Maternal and Child Research (IDIMI), Faculty of Medicine, University of Chile, Santiago, Chile
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3
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Radiosensitization of Breast Cancer Cells with a 2-Methoxyestradiol Analogue Affects DNA Damage and Repair Signaling In Vitro. Int J Mol Sci 2023; 24:ijms24043592. [PMID: 36835001 PMCID: PMC9965329 DOI: 10.3390/ijms24043592] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 01/27/2023] [Accepted: 01/30/2023] [Indexed: 02/16/2023] Open
Abstract
Radiation resistance and radiation-related side effects warrant research into alternative strategies in the application of this modality to cancer treatment. Designed in silico to improve the pharmacokinetics and anti-cancer properties of 2-methoxyestradiol, 2-ethyl-3-O-sulfamoyl-estra-1,3,5(10)16-tetraene (ESE-16) disrupts microtubule dynamics and induces apoptosis. Here, we investigated whether pre-exposure of breast cancer cells to low-dose ESE-16 would affect radiation-induced deoxyribonucleic acid (DNA) damage and the consequent repair pathways. MCF-7, MDA-MB-231, and BT-20 cells were exposed to sub-lethal doses of ESE-16 for 24 h before 8 Gy radiation. Flow cytometric quantification of Annexin V, clonogenic studies, micronuclei quantification, assessment of histone H2AX phosphorylation and Ku70 expression were performed to assess cell viability, DNA damage, and repair pathways, in both directly irradiated cells and cells treated with conditioned medium. A small increase in apoptosis was observed as an early consequence, with significant repercussions on long-term cell survival. Overall, a greater degree of DNA damage was detected. Moreover, initiation of the DNA-damage repair response was delayed, with a subsequent sustained elevation. Radiation-induced bystander effects induced similar pathways and were initiated via intercellular signaling. These results justify further investigation of ESE-16 as a radiation-sensitizing agent since pre-exposure appears to augment the response of tumor cells to radiation.
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Shi X, Yang J, Deng S, Xu H, Wu D, Zeng Q, Wang S, Hu T, Wu F, Zhou H. TGF-β signaling in the tumor metabolic microenvironment and targeted therapies. J Hematol Oncol 2022; 15:135. [PMID: 36115986 PMCID: PMC9482317 DOI: 10.1186/s13045-022-01349-6] [Citation(s) in RCA: 56] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Accepted: 08/24/2022] [Indexed: 12/30/2022] Open
Abstract
AbstractTransforming growth factor-β (TGF-β) signaling has a paradoxical role in cancer progression, and it acts as a tumor suppressor in the early stages but a tumor promoter in the late stages of cancer. Once cancer cells are generated, TGF-β signaling is responsible for the orchestration of the immunosuppressive tumor microenvironment (TME) and supports cancer growth, invasion, metastasis, recurrence, and therapy resistance. These progressive behaviors are driven by an “engine” of the metabolic reprogramming in cancer. Recent studies have revealed that TGF-β signaling regulates cancer metabolic reprogramming and is a metabolic driver in the tumor metabolic microenvironment (TMME). Intriguingly, TGF-β ligands act as an “endocrine” cytokine and influence host metabolism. Therefore, having insight into the role of TGF-β signaling in the TMME is instrumental for acknowledging its wide range of effects and designing new cancer treatment strategies. Herein, we try to illustrate the concise definition of TMME based on the published literature. Then, we review the metabolic reprogramming in the TMME and elaborate on the contribution of TGF-β to metabolic rewiring at the cellular (intracellular), tissular (intercellular), and organismal (cancer-host) levels. Furthermore, we propose three potential applications of targeting TGF-β-dependent mechanism reprogramming, paving the way for TGF-β-related antitumor therapy from the perspective of metabolism.
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Al-Qahtani SD, Bin-Melaih HH, Atiya EM, Fahmy UA, Binmahfouz LS, Neamatallah T, Al-Abbasi FA, Abdel-Naim AB. Self-Nanoemulsifying Drug Delivery System of 2-Methoxyestradiol Exhibits Enhanced Anti-Proliferative and Pro-Apoptotic Activities in MCF-7 Breast Cancer Cells. Life (Basel) 2022; 12:life12091369. [PMID: 36143405 PMCID: PMC9503162 DOI: 10.3390/life12091369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Revised: 08/25/2022] [Accepted: 08/30/2022] [Indexed: 11/16/2022] Open
Abstract
(1) Background: 2-Methoxyestradiol (2ME) is a metabolite of estrogens and possesses promising anti-proliferative and cytotoxic activities. However, it suffers unfavorable pharmacokinetic characteristics such as absorption after oral administration. The aim of this study was to prepare an optimized 2ME self-nanoemulsifying drug delivery system (2ME-SNEDDS) and evaluate its cytotoxicity and pro-apoptotic activities in MCF-7 breast cancer cells. (2) Methods: For optimization of the 2ME-SNEDDS, a three-component system was used in the D-optimal mixture experimental study. MCF-7 cells were incubated with the 2ME-SNEDDS and subjected to an assessment of growth inhibition, cell cycle progression, annexin V staining, caspase-3 concentration, Bax, Bcl-2, and cyclin D1 mRNA expression, and reactive oxygen species (ROS) generation. (3) Results: The optimized formula had a globule size of 94.97 ± 4.35 nm. Zeta potential was found to be −3.4 ± 1.2 mV with a polydispersity index (PDI) of 0.34. In addition, 96.3 ± 4.3% of 2ME was released from the 2ME-SNEDDS within 24 h using the activated analysis bag technique. Moreover, the prepared 2ME-SNEDDS exhibited a significant enhancement of the anti-proliferative activity against MCF-7 cells in comparison to raw 2ME. This was associated with cyclin D1 expression down-regulation and the accumulation of cells in the G0/G1 and G2/M phases. The pro-apoptotic activities of the 2ME-SNEDDS were confirmed by annexin V staining, which indicated enhanced early and late cell death. This accompanied modulation of the mRNA expression of Bax and Bcl-2 in favor of apoptosis. The 2ME-SNEDDS significantly enhanced cleaved caspase-3 concentration in comparison to raw 2ME. In addition, the 2ME-SNEDDS significantly increased the generation of ROS in MCF-7 cells. (4) Conclusions: The 2ME-SNEDDS exhibits enhanced cytotoxicity and pro-apoptotic activity in MCF-7 cells. This is mediated by, at least partially, ROS generation.
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Affiliation(s)
- Salwa D. Al-Qahtani
- Department of Medical Laboratory Sciences, Faculty of Applied Medical Science, Majmaah University, Majmaah 11952, Saudi Arabia
- Department of Biochemistry, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Hawazen H. Bin-Melaih
- Department of Biological Sciences, Faculty of Sciences, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Eman M. Atiya
- Department of Biochemistry, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Usama A. Fahmy
- Department of Pharmaceutics, Faculty of Pharmacy, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Lenah S. Binmahfouz
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Thikryat Neamatallah
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Fahad A. Al-Abbasi
- Department of Biochemistry, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Ashraf B. Abdel-Naim
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, King Abdulaziz University, Jeddah 21589, Saudi Arabia
- Correspondence:
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Hargrave SD, Joubert AM, Potter BVL, Dohle W, Marais S, Mercier AE. Cell Fate following Irradiation of MDA-MB-231 and MCF-7 Breast Cancer Cells Pre-Exposed to the Tetrahydroisoquinoline Sulfamate Microtubule Disruptor STX3451. Molecules 2022; 27:3819. [PMID: 35744942 PMCID: PMC9228122 DOI: 10.3390/molecules27123819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Revised: 05/26/2022] [Accepted: 05/30/2022] [Indexed: 11/16/2022] Open
Abstract
A tetrahydroisoquinoline (THIQ) core is able to mimic the A and B rings of 2-methoxyestradiol (2ME2), an endogenous estrogen metabolite that demonstrates promising anticancer properties primarily by disrupting microtubule dynamic instability parameters, but has very poor pharmaceutical properties that can be improved by sulfamoylation. The non-steroidal THIQ-based microtubule disruptor 2-(3-bromo-4,5-dimethoxybenzyl)-7-methoxy-6-sulfamoyloxy-1,2,3,4-tetrahydroisoquinoline (STX3451), with enhanced pharmacokinetic and pharmacodynamic profiles, was explored for the first time in radiation biology. We investigated whether 24 h pre-treatment with STX3451 could pre-sensitize MCF-7 and MDA-MB-231 breast cancer cells to radiation. This regimen showed a clear increase in cytotoxicity compared to the individual modalities, results that were contiguous in spectrophotometric analysis, flow cytometric quantification of apoptosis induction, clonogenic studies and microscopy techniques. Drug pre-treatment increased radiation-induced DNA damage, with statistically more double-strand (ds) DNA breaks demonstrated. The latter could be due to the induction of a radiation-sensitive metaphase block or the increased levels of reactive oxygen species, both evident after compound exposure. STX3451 pre-exposure may also delay DNA repair mechanisms, as the DNA damage response element ataxia telangiectasia mutated (ATM) was depressed. These in vitro findings may translate into in vivo models, with the ultimate aim of reducing both radiation and drug doses for maximal clinical effect with minimal adverse effects.
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Affiliation(s)
- Scott D. Hargrave
- Department of Physiology, Faculty of Health Sciences, University of Pretoria, Pretoria 0001, South Africa; (S.D.H.); (A.M.J.); (S.M.)
| | - Anna M. Joubert
- Department of Physiology, Faculty of Health Sciences, University of Pretoria, Pretoria 0001, South Africa; (S.D.H.); (A.M.J.); (S.M.)
| | - Barry V. L. Potter
- Medicinal Chemistry & Drug Discovery, Department of Pharmacology, University of Oxford, Mansfield Road, Oxford OX1 3QT, UK; (B.V.L.P.); (W.D.)
| | - Wolfgang Dohle
- Medicinal Chemistry & Drug Discovery, Department of Pharmacology, University of Oxford, Mansfield Road, Oxford OX1 3QT, UK; (B.V.L.P.); (W.D.)
| | - Sumari Marais
- Department of Physiology, Faculty of Health Sciences, University of Pretoria, Pretoria 0001, South Africa; (S.D.H.); (A.M.J.); (S.M.)
| | - Anne E. Mercier
- Department of Physiology, Faculty of Health Sciences, University of Pretoria, Pretoria 0001, South Africa; (S.D.H.); (A.M.J.); (S.M.)
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Yu C, Li C, Pan H, Li T, He S. Preparation of 2-Methoxyestradiol Self-emulsified Drug Delivery System and the Effect on Combination Therapy with Doxorubicin Against MCF-7/ADM Cells. AAPS PharmSciTech 2022; 23:147. [PMID: 35585431 DOI: 10.1208/s12249-022-02298-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Accepted: 05/03/2022] [Indexed: 12/18/2022] Open
Abstract
Due to the poor solubility and bioavailability of 2-methoxyestradiol (2-ME), 2-ME emulsified drug delivery system (2-ME-SEDDS) was designed and characterized. After dilution with 5% glucose, 2-ME-SEDDS formed fine emulsions with mean diameter of 171 ± 14 nm and zeta potential of - 7.4 ± 0.6 mV. The cytotoxicity of 2-ME-SEDDS against MCF-7 and MCF-7/ADM cells was considerable to that of free 2-ME, and the half maximal inhibitory concentration ran up to 195 µg/mL on MCF-7/ADM cells. In order to gain a satisfactory inhibition effect on MCF-7/ADM cells, 2-ME-SEDDS combined with doxorubicin was used. It is worth noting that the combination of 2-ME-SEDDS and doxorubicin displayed a superior synergistic effect with a combined index of 0.62. And the cellular uptake of doxorubicin by MCF-7/ADM cells in the combination group was significantly higher than that of doxorubicin treatment group. The study preliminarily suggested that 2-ME-SEDDS could increase the cellular uptake of doxorubicin by MCF-7/ADM cells and the synergistic effect may be attributed to the increased cellular uptake of doxorubicin under the influence of 2-ME-SEDDS. In conclusion, SEDDS was an alternative and promising formulation for 2-ME. The combination therapy with synergistic effect by the combination of 2-ME-SEDDS and doxorubicin seems to be a promising strategy to potentiate anti-tumor efficiency against MCF-7/ADM, even other multidrug resistance tumors.
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8
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Intracellular Signaling Responses Induced by Radiation within an In Vitro Bone Metastasis Model after Pre-Treatment with an Estrone Analogue. Cells 2021; 10:cells10082105. [PMID: 34440874 PMCID: PMC8394480 DOI: 10.3390/cells10082105] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 08/03/2021] [Accepted: 08/03/2021] [Indexed: 12/27/2022] Open
Abstract
2-Ethyl-3-O-sulfamoyl-estra-1,3,5(10)16-tetraene (ESE-16) is an in silico-designed estradiol analogue which has improved the parent compound’s efficacy in anti-cancer studies. In this proof-of-concept study, the potential radiosensitizing effects of ESE-16 were investigated in an in vitro deconstructed bone metastasis model. Prostate (DU 145) and breast (MDA-MB-231) tumor cells, osteoblastic (MC3T3-E1) and osteoclastic (RAW 264.7) bone cells and human umbilical vein endothelial cells (HUVECs) were representative components of such a lesion. Cells were exposed to a low-dose ESE-16 for 24 hours prior to radiation at non-lethal doses to determine early signaling and molecular responses of this combination treatment. Tartrate-resistant acid phosphatase activity and actin ring formation were investigated in osteoclasts, while cell cycle progression, reactive oxygen species generation and angiogenic protein expression were investigated in HUVECs. Increased cytotoxicity was evident in tumor and endothelial cells while bone cells appeared to be spared. Increased mitotic indices were calculated, and evidence of increased deoxyribonucleic acid damage with retarded repair, together with reduced metastatic signaling was observed in tumor cells. RAW 264.7 macrophages retained their ability to differentiate into osteoclasts. Anti-angiogenic effects were observed in HUVECs, and expression of hypoxia-inducible factor 1-α was decreased. Through preferentially inducing tumor cell death and potentially inhibiting neovascularization whilst preserving bone physiology, this low-dose combination regimen warrants further investigation for its promising therapeutic application in bone metastases management, with the additional potential of limited treatment side effects.
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Rashid M, Zadeh LR, Baradaran B, Molavi O, Ghesmati Z, Sabzichi M, Ramezani F. Up-down regulation of HIF-1α in cancer progression. Gene 2021; 798:145796. [PMID: 34175393 DOI: 10.1016/j.gene.2021.145796] [Citation(s) in RCA: 108] [Impact Index Per Article: 36.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2020] [Revised: 04/25/2021] [Accepted: 06/22/2021] [Indexed: 12/19/2022]
Abstract
Hypoxia induicible factor-1 alpha (HIF-1α) is a key transcription factor in cancer progression and target therapy in cancer. HIF-1α acts differently depending on presence or absence of Oxygen. In an oxygen-immersed environment, HIF-1α completely deactivated and destroyed by the ubiquitin proteasome pathway (UPP). In contrast, in the oxygen-free environment, it escapes destruction and enters to the nucleus of cells then upregulates many genes involved in cancer progression. Overexpressed HIF-1α and downstream genes support cancer progression through various mechanisms including angiogenesis, proliferation and survival of cells, metabolism reprogramming, invasion and metastasis, cancer stem cell maintenance, induction of genetic instability, and treatment resistance. HIF-1α can be provoked by signaling pathways unrelated to hypoxia during cancer progression. Therefore, cancer development and progression can be modulated by targeting HIF-1α and its downstream signaling molecules. In this regard, HIF-1α inhibitors which are categorized into the agents that regulate HIF-1α in gene, mRNA and protein levels used as an efficient way in cancer treatment. Also, HIF-1α expression can be negatively affected by the agents suppressing the activation of mTOR, PI3k/Akt and MAPK pathways.
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Affiliation(s)
- Mohsen Rashid
- Department of Molecular Medicine, School of Advanced Medical Science, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Leila Rostami Zadeh
- Department of Molecular Medicine, School of Advanced Medical Science, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Behzad Baradaran
- Department of Molecular Medicine, School of Advanced Medical Science, Tabriz University of Medical Sciences, Tabriz, Iran; Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Ommoleila Molavi
- Biotechnology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran; Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Zeinab Ghesmati
- Department of Medical Biotechnology, School of Advanced Medical Science, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mehdi Sabzichi
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, Alberta, Canada
| | - Fatemeh Ramezani
- Department of Molecular Medicine, School of Advanced Medical Science, Tabriz University of Medical Sciences, Tabriz, Iran.
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10
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Xu C, Zhang W, Wang R, Tan S, Holub JM, Tang B. Versatile Gold-Coupled Te-Carbon Dots for Quantitative Monitoring and Efficient Scavenging of Superoxide Anions. Anal Chem 2021; 93:9111-9118. [PMID: 34157223 DOI: 10.1021/acs.analchem.1c00844] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The superoxide anion (O2•-) is a reactive oxygen species (ROS) that functions as an important regulator of signal transduction in living systems. However, excess O2•- can cause metabolic imbalances and oxidative damage inside cells. Quantitative detection and efficient scavenging of O2•- are therefore critical for maintaining intracellular redox balance and homeostasis. In this work, a nanomaterial (Au-TeCD) composed of BSA-modified gold nanoparticles (AuNPs) complexed with tellurium-containing carbon dots (TeCDs) was constructed. The introduction of Au-TeCDs to solutions containing superoxide resulted in enhanced elimination of the anion, indicating that Au-TeCDs are able to scavenge O2•- from the surrounding environment. Notably, the respective TeCD and AuNP components of the Au-TeCDs were found to emit fluorescence at 425 and 640 nm upon exposure to superoxide anions. This unique spectroscopic property of Au-TeCDs allowed levels of O2•- in solution to be quantified using dual-fluorescence detection. The Au-TeCDs developed herein also exhibited low-cytotoxicity, versatile capabilities for in situ fluorescence imaging, and effective scavenging of O2•- in living cells. Taken together, these results suggest that Au-TeCDs act as effective tools for monitoring superoxide concentrations in complex mixtures and may be developed as possible therapeutics designed to scavenge excess ROS from diseased cells.
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Affiliation(s)
- Chang Xu
- Department of Chemistry and Biochemistry, Ohio University, Athens, Ohio 45701, United States
| | - Wei Zhang
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan, 250014 P. R. China
| | - Ruixia Wang
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan, 250014 P. R. China
| | - Shuzhi Tan
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan, 250014 P. R. China
| | - Justin M Holub
- Department of Chemistry and Biochemistry, Ohio University, Athens, Ohio 45701, United States
| | - Bo Tang
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan, 250014 P. R. China
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11
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Mercier AE, Prudent R, Pepper MS, De Koning L, Nolte E, Peronne L, Nel M, Lafanechère L, Joubert AM. Characterization of Signalling Pathways That Link Apoptosis and Autophagy to Cell Death Induced by Estrone Analogues Which Reversibly Depolymerize Microtubules. Molecules 2021; 26:molecules26030706. [PMID: 33572896 PMCID: PMC7866274 DOI: 10.3390/molecules26030706] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Revised: 01/07/2021] [Accepted: 01/12/2021] [Indexed: 11/16/2022] Open
Abstract
The search for novel anti-cancer compounds which can circumvent chemotherapeutic drug resistance and limit systemic toxicity remains a priority. 2-Ethyl-3-O-sulphamoyl-estra-1,3,5(10)15-tetraene-3-ol-17one (ESE-15-one) and 2-ethyl-3-O-sulphamoyl-estra-1,3,5(10)16-tetraene (ESE-16) are sulphamoylated 2-methoxyestradiol (2-ME) analogues designed by our research team. Although their cytotoxicity has been demonstrated in vitro, the temporal and mechanistic responses of the initiated intracellular events are yet to be determined. In order to do so, assays investigating the compounds' effects on microtubules, cell cycle progression, signalling cascades, autophagy and apoptosis were conducted using HeLa cervical- and MDA-MB-231 metastatic breast cancer cells. Both compounds reversibly disrupted microtubule dynamics as an early event by binding to the microtubule colchicine site, which blocked progression through the cell cycle at the G1/S- and G2/M transitions. This was supported by increased pRB and p27Kip1 phosphorylation. Induction of apoptosis with time-dependent signalling involving the p-JNK, Erk1/2 and Akt/mTOR pathways and loss of mitochondrial membrane potential was demonstrated. Inhibition of autophagy attenuated the apoptotic response. In conclusion, the 2-ME analogues induced a time-dependent cross-talk between cell cycle checkpoints, apoptotic signalling and autophagic processes, with an increased reactive oxygen species formation and perturbated microtubule functioning appearing to connect the processes. Subtle differences in the responses were observed between the two compounds and the different cell lines.
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Affiliation(s)
- Anne E. Mercier
- Department of Physiology, School of Medicine, Faculty of Health Sciences, University of Pretoria, Pretoria 0001, South Africa; (E.N.); (M.N.); (L.L.); (A.M.J.)
- Correspondence: ; Tel.: +27-(0)-12-319-2141
| | - Renaud Prudent
- Institute for Advanced Biosciences, Team Regulation and Pharmacology of the Cytoskeleton, INSERM U1209, CNRS UMR5309, Université Grenoble Alpes, 38700 Grenoble, France; (R.P.); (L.P.)
| | - Michael S. Pepper
- Institute for Cellular and Molecular Medicine, Department of Immunology, School of Medicine, SAMRC Extramural Unit for Stem Cell Research and Therapy, Faculty of Health Sciences, University of Pretoria, Pretoria 0001, South Africa;
| | - Leanne De Koning
- RPPA Platform, Institut Curie Centre de Recherche, PSL Research University, Paris 75248, France;
| | - Elsie Nolte
- Department of Physiology, School of Medicine, Faculty of Health Sciences, University of Pretoria, Pretoria 0001, South Africa; (E.N.); (M.N.); (L.L.); (A.M.J.)
| | - Lauralie Peronne
- Institute for Advanced Biosciences, Team Regulation and Pharmacology of the Cytoskeleton, INSERM U1209, CNRS UMR5309, Université Grenoble Alpes, 38700 Grenoble, France; (R.P.); (L.P.)
| | - Marcel Nel
- Department of Physiology, School of Medicine, Faculty of Health Sciences, University of Pretoria, Pretoria 0001, South Africa; (E.N.); (M.N.); (L.L.); (A.M.J.)
| | - Laurence Lafanechère
- Department of Physiology, School of Medicine, Faculty of Health Sciences, University of Pretoria, Pretoria 0001, South Africa; (E.N.); (M.N.); (L.L.); (A.M.J.)
- Institute for Advanced Biosciences, Team Regulation and Pharmacology of the Cytoskeleton, INSERM U1209, CNRS UMR5309, Université Grenoble Alpes, 38700 Grenoble, France; (R.P.); (L.P.)
| | - Anna M. Joubert
- Department of Physiology, School of Medicine, Faculty of Health Sciences, University of Pretoria, Pretoria 0001, South Africa; (E.N.); (M.N.); (L.L.); (A.M.J.)
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12
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2-methoxyestradiol sensitizes breast cancer cells to taxanes by targeting centrosomes. Oncotarget 2020; 11:4479-4489. [PMID: 33400733 PMCID: PMC7721614 DOI: 10.18632/oncotarget.27810] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Accepted: 10/27/2020] [Indexed: 12/19/2022] Open
Abstract
Centrosomes amplification is a hallmark of cancer. We hypothesize that 2-methoxyestradiol (2-ME) sensitizes breast cancer (BC) cells to taxanes by targeting amplified centrosomes. We assessed the extent by which 2-ME together with paclitaxel (PTX) induces centrosome alterations with subsequent mitotic catastrophe in different BC subtypes. 2-ME induced a significant reduction in PTX IC50 values in all cells tested ranging from 28–44% (P < 0.05). Treatment with both PTX and 2-ME significantly increased the number of misaligned metaphases compared to PTX alone (34%, 100% and 52% for MCF7, MDA-MB231 and SUM149, respectively; P < 0.05). The number of cells with multipolar spindle formation was significantly increased (81%, 220% and 285% for MCF7, MDA-MB231 and SUM 149, respectively; P < 0.05). PTX and 2-ME treatment significantly increased interphase declustering in cancer cells (56% for MCF7, 208% for MDA-MB231 and 218% for SUM149, respectively; P < 0.05) and metaphase declustering (1.4-fold, 1.56-fold and 2.48-fold increase for MCF7, MDA-MB231 and SUM149, respectively; P < 0.05). This report is the first to document centrosome declustering as a mechanism of action of 2-ME and provides a potential approach for reducing taxane toxicity in cancer treated patients.
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Free Radicals as a Double-Edged Sword: The Cancer Preventive and Therapeutic Roles of Curcumin. Molecules 2020; 25:molecules25225390. [PMID: 33217990 PMCID: PMC7698794 DOI: 10.3390/molecules25225390] [Citation(s) in RCA: 64] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Revised: 11/13/2020] [Accepted: 11/15/2020] [Indexed: 01/07/2023] Open
Abstract
Free radicals, generally composed of reactive oxygen species (ROS) and reactive nitrogen species (RNS), are generated in the body by various endogenous and exogenous systems. The overproduction of free radicals is known to cause several chronic diseases including cancer. However, increased production of free radicals by chemotherapeutic drugs is also associated with apoptosis in cancer cells, indicating the dual nature of free radicals. Among various natural compounds, curcumin manifests as an antioxidant in normal cells that helps in the prevention of carcinogenesis. It also acts as a prooxidant in cancer cells and is associated with inducing apoptosis. Curcumin quenches free radicals, induces antioxidant enzymes (catalase, superoxide dismutase, glutathione peroxidase), and upregulates antioxidative protein markers-Nrf2 and HO-1 that lead to the suppression of cellular oxidative stress. In cancer cells, curcumin aggressively increases ROS that results in DNA damage and subsequently cancer cell death. It also sensitizes drug-resistant cancer cells and increases the anticancer effects of chemotherapeutic drugs. Thus, curcumin shows beneficial effects in prevention, treatment and chemosensitization of cancer cells. In this review, we will discuss the dual role of free radicals as well as the chemopreventive and chemotherapeutic effects of curcumin and its analogues against cancer.
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Oh Y, Jung HR, Min S, Kang J, Jang D, Shin S, Kim J, Lee SE, Sung CO, Lee WS, Lee C, Jeong EM, Cho SY. Targeting antioxidant enzymes enhances the therapeutic efficacy of the BCL-X L inhibitor ABT-263 in KRAS-mutant colorectal cancers. Cancer Lett 2020; 497:123-136. [PMID: 33068701 DOI: 10.1016/j.canlet.2020.10.018] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Revised: 09/27/2020] [Accepted: 10/12/2020] [Indexed: 12/27/2022]
Abstract
Cancer chemotherapeutic drugs exert cytotoxic effects by modulating intracellular reactive oxygen species (ROS) levels. However, whether ROS modulates the efficacy of targeted therapeutics remains poorly understood. Previously, we reported that upregulation of the anti-apoptotic protein, BCL-XL, by KRAS activating mutations was a potential target for KRAS-mutant colorectal cancer (CRC) treatment. Here, we demonstrated that the BCL-XL targeting agent, ABT-263, increased intracellular ROS levels and targeting antioxidant pathways augmented the therapeutic efficacy of this BH3 mimetic. ABT-263 induced expression of genes associated with ROS response and increased intracellular ROS levels by enhancing mitochondrial superoxide generation. The superoxide dismutase inhibitor, 2-methoxyestradiol (2-ME), exhibited synergism with ABT-263 in KRAS-mutant CRC cell lines. This synergistic effect was attributed to the inhibition of mTOR-dependent translation of the anti-apoptotic MCL-1 protein via caspase 3-mediated cleavage of AKT and S6K. In addition, combination treatment of ABT-263 and 2-ME demonstrated a synergistic effect in in vivo patient-derived xenografts harboring KRAS mutations. Our data suggest a novel role for ROS in BH3 mimetic-based targeted therapy and provide a novel strategy for treatment of CRC patients with KRAS mutations.
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Affiliation(s)
- Yumi Oh
- Department of Biochemistry and Molecular Biology, Seoul National University College of Medicine, Seoul, 03080, Republic of Korea; Medical Research Center, Genomic Medicine Institute (GMI), Seoul National University College of Medicine, Seoul, 03080, Korea
| | - Hae Rim Jung
- Department of Biochemistry and Molecular Biology, Seoul National University College of Medicine, Seoul, 03080, Republic of Korea; Medical Research Center, Genomic Medicine Institute (GMI), Seoul National University College of Medicine, Seoul, 03080, Korea
| | - Seoyeon Min
- Department of Life Science, Ewha Womans University, Seoul, 03760, Republic of Korea
| | - Jinjoo Kang
- Department of Life Science, Ewha Womans University, Seoul, 03760, Republic of Korea
| | - Dongjun Jang
- Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, 03080, Republic of Korea
| | - Seungjae Shin
- Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, 03080, Republic of Korea
| | - Jiwon Kim
- Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, 03080, Republic of Korea
| | - Sang Eun Lee
- Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, 03080, Republic of Korea
| | - Chang Ohk Sung
- Department of Pathology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, 05505, Republic of Korea
| | - Won-Suk Lee
- Department of Surgery, Gil Medical Center, Gachon University, Incheon, 21565, Republic of Korea
| | - Charles Lee
- Department of Life Science, Ewha Womans University, Seoul, 03760, Republic of Korea; The Jackson Laboratory for Genomic Medicine, Farmington, CT, 06032, USA
| | - Eui Man Jeong
- Department of Pharmacy, College of Pharmacy, Jeju National University, Jeju Special Self-Governing Province, 63243, Republic of Korea; Interdisciplinary Graduate Program in Advanced Convergence Technology and Science, Jeju National University, Jeju Special Self-Governing Province, 63243, Republic of Korea; Bio-Health Materials Core-Facility Center, Jeju National University, Jeju Special Self-Governing Province, 63243, Republic of Korea; Practical Translational Research Center, Jeju National University, Jeju Special Self-Governing Province, 63243, Republic of Korea.
| | - Sung-Yup Cho
- Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, 03080, Republic of Korea; Cancer Research Institute, Seoul National University, Seoul, 03080, Republic of Korea; Medical Research Center, Genomic Medicine Institute (GMI), Seoul National University College of Medicine, Seoul, 03080, Korea.
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15
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Pal P, Hales K, Hales DB. The pro-apoptotic actions of 2-methoxyestradiol against ovarian cancer involve catalytic activation of PKCδ signaling. Oncotarget 2020; 11:3646-3659. [PMID: 33088425 PMCID: PMC7546757 DOI: 10.18632/oncotarget.27760] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Accepted: 09/10/2020] [Indexed: 02/02/2023] Open
Abstract
Background: 2-methoxyestradiol (2MeOE2) is a natural metabolite of estradiol, which is generated by the action of CYP1A1 enzyme in the liver. We have previously shown that a flaxseed-supplemented diet decreases both the incidence and severity of ovarian cancer in laying hens, also induces CYP1A1 expression in liver. Recently, we have shown that as a biologically derived active component of flax diet, 2MeOE2 induces apoptosis in ovarian cancer cells which is partially dependent on p38 MAPK. The objective of this study was to elucidate the molecular mechanism of actions of 2MeOE2, a known microtubule disrupting agent, in inducing apoptosis in ovarian tumors. Results: 2MeOE2 induces γH2Ax expression and apoptotic histone modifications in ovarian cancer cells, which are predicted downstream targets of protein kinase Cδ (PKCδ) during apoptosis. Overexpressing full length PKCδ alone does not induce apoptosis but potentiates 2MeOE2-mediated apoptosis. C3-domain mutated dominant-negative PKCδ (PKCδDN) significantly reduces 2MeOE2-induced caspase-3 cleavage and apoptotic histone modification. Silencing PKCδ diminishes 2MeOE2-mediated apoptosis. The catalytic fragment of PKCδ (PKCδCAT) evokes pro-apoptotic effects which are principally dependent on p38 MAPK phosphorylation. Conclusions: The pro-apoptotic actions of 2MeOE2 are in part dependent on catalytic activation of PKCδ. Catalytic activation of PKCδ accelerates the 2MeOE2-induced apoptotic cascade. This study describes a novel molecular action of flaxseed diet in ovarian cancer.
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Affiliation(s)
- Purab Pal
- Department of Physiology, Southern Illinois University, Carbondale, IL 62901, USA
| | - Karen Hales
- Department of Obstetrics and Gynecology, Southern Illinois University School of Medicine, Springfield, IL 62702, USA
| | - Dale Buchanan Hales
- Department of Physiology, Southern Illinois University, Carbondale, IL 62901, USA.,Department of Obstetrics and Gynecology, Southern Illinois University School of Medicine, Springfield, IL 62702, USA
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Wang M, Xia F, Wei Y, Wei X. Molecular mechanisms and clinical management of cancer bone metastasis. Bone Res 2020; 8:30. [PMID: 32793401 PMCID: PMC7391760 DOI: 10.1038/s41413-020-00105-1] [Citation(s) in RCA: 81] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Revised: 09/03/2019] [Accepted: 10/23/2019] [Indexed: 02/05/2023] Open
Abstract
As one of the most common metastatic sites of malignancies, bone has a unique microenvironment that allows metastatic tumor cells to grow and flourish. The fenestrated capillaries in the bone, bone matrix, and bone cells, including osteoblasts and osteoclasts, together maintain the homeostasis of the bone microenvironment. In contrast, tumor-derived factors act on bone components, leading to subsequent bone resorption or excessive bone formation. The various pathways involved also provide multiple targets for therapeutic strategies against bone metastases. In this review, we summarize the current understanding of the mechanism of bone metastases. Based on the general process of bone metastases, we specifically highlight the complex crosstalk between tumor cells and the bone microenvironment and the current management of cancer bone metastases.
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Affiliation(s)
- Manni Wang
- Laboratory of Aging Research and Cancer Drug Targets, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, No. 17, Block 3, Southern Renmin Road, Chengdu, 610041 Sichuan P.R. China
| | - Fan Xia
- Department of Neurosurgery, West China Hospital, Sichuan University, Chengdu, 610041 Sichuan P.R. China
| | - Yuquan Wei
- Laboratory of Aging Research and Cancer Drug Targets, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, No. 17, Block 3, Southern Renmin Road, Chengdu, 610041 Sichuan P.R. China
| | - Xiawei Wei
- Laboratory of Aging Research and Cancer Drug Targets, State Key Laboratory of Biotherapy and Cancer Center, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, No. 17, Block 3, Southern Renmin Road, Chengdu, 610041 Sichuan P.R. China
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17
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2-Methoxyestradiol inhibits high fat diet-induced obesity in rats through modulation of adipose tissue macrophage infiltration and immunophenotype. Eur J Pharmacol 2020; 878:173106. [PMID: 32283059 DOI: 10.1016/j.ejphar.2020.173106] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Revised: 04/04/2020] [Accepted: 04/06/2020] [Indexed: 12/31/2022]
Abstract
Recently, experimental studies demonstrated that 2-methoxyestradiol (2ME2) ameliorates high fat diet (HFD)-induced obesity and restores insulin sensitivity. However, the mechanisms underlying these effects are unveiled yet. The current study was undertaken to test the hypothesis that 2ME2 exerts its effects by modulating adipose tissue macrophages (ATMs) accumulation, polarization and immunophenotypes. The experiment was carried out in males Wistar rats (n = 28) for 13 consecutive weeks. In HFD-fed group; body weight, glucose intolerance, serum insulin, HOMA-IR, lipid profile and adipose tissue (AT) weight were significantly higher compared to normal standard diet (NSD)- fed rats. However, treatment of HFD-fed rats with 2ME2 (200 μg/kg/day; i.p. from the beginning of the 9th week) resulted in significant enhancements in all these parameters as compared to HFD-fed rats. Treatment with 2ME2 was associated with a significant reduction in macrophage infiltration in the AT, shifting macrophage polarization towards M2 phenotype as indicated by significant decrease in the expression of pro-inflammatory M1 macrophages markers (IL-6, IL-1β, CD11c and iNOS) and concurrent significant increase in the M2 anti-inflammatory macrophage markers (Arginase 1 and IL-10). 2ME2 ameliorates HFD-induced obesity and glucose intolerance through inhibition of ATM infiltration in AT and shifting macrophage polarization from pro-inflammatory M1 to M2 anti-inflammatory phenotypes.
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Understanding of ROS-Inducing Strategy in Anticancer Therapy. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2019; 2019:5381692. [PMID: 31929855 PMCID: PMC6939418 DOI: 10.1155/2019/5381692] [Citation(s) in RCA: 208] [Impact Index Per Article: 41.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/19/2019] [Revised: 11/19/2019] [Accepted: 11/23/2019] [Indexed: 02/06/2023]
Abstract
Redox homeostasis is essential for the maintenance of diverse cellular processes. Cancer cells have higher levels of reactive oxygen species (ROS) than normal cells as a result of hypermetabolism, but the redox balance is maintained in cancer cells due to their marked antioxidant capacity. Recently, anticancer therapies that induce oxidative stress by increasing ROS and/or inhibiting antioxidant processes have received significant attention. The acceleration of accumulative ROS disrupts redox homeostasis and causes severe damage in cancer cells. In this review, we describe ROS-inducing cancer therapy and the anticancer mechanism employed by prooxidative agents. To understand the comprehensive biological response to certain prooxidative anticancer drugs such as 2-methoxyestradiol, buthionine sulfoximine, cisplatin, doxorubicin, imexon, and motexafin gadolinium, we propose and visualize the drug-gene, drug-cell process, and drug-disease interactions involved in oxidative stress induction and antioxidant process inhibition as well as specific side effects of these drugs using pathway analysis with a big data-based text-mining approach. Our review will be helpful to improve the therapeutic effects of anticancer drugs by providing information about biological changes that occur in response to prooxidants. For future directions, there is still a need for pharmacogenomic studies on prooxidative agents as well as the molecular mechanisms underlying the effects of the prooxidants and/or antioxidant-inhibitor agents for effective anticancer therapy through selective killing of cancer cells.
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19
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Tang W, Zhao G. Small molecules targeting HIF-1α pathway for cancer therapy in recent years. Bioorg Med Chem 2019; 28:115235. [PMID: 31843464 DOI: 10.1016/j.bmc.2019.115235] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Revised: 11/19/2019] [Accepted: 11/21/2019] [Indexed: 02/06/2023]
Abstract
Hypoxia is a very important feature of tumors, especially for solid tumors, and it was demonstrated highly relevant with aggressive biology, including anti-apoptosis, vasculogenesis and radiation or chemotherapy resistance. Correlatively, hypoxia-inducible factors 1-α (HIF-1α), which the wildest contribution of hypoxia-inducible factors (HIFs), plays a crucial role in the adaptation of tumor cells to hypoxia via upregulating the transcription of the oncogene and downregulating the transcription of suppressor gene. This review focus on the HIF-1α regulation including hydroxylation and acetylation, growth factors pathway, heat shock proteins(HSPs), and small molecule inhibitors for HIF-1α directly or indirectly.
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Affiliation(s)
- Wendi Tang
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Shandong University, 44 West Culture Road, Jinan 250012, PR China
| | - Guisen Zhao
- Department of Medicinal Chemistry, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Shandong University, 44 West Culture Road, Jinan 250012, PR China.
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20
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Skrajnowska D, Bobrowska-Korczak B. Role of Zinc in Immune System and Anti-Cancer Defense Mechanisms. Nutrients 2019; 11:E2273. [PMID: 31546724 PMCID: PMC6835436 DOI: 10.3390/nu11102273] [Citation(s) in RCA: 164] [Impact Index Per Article: 32.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2019] [Revised: 09/13/2019] [Accepted: 09/18/2019] [Indexed: 02/06/2023] Open
Abstract
The human body cannot store zinc reserves, so a deficiency can arise relatively quickly, e.g., through an improper diet. Severe zinc deficiency is rare, but mild deficiencies are common around the world. Many epidemiological studies have shown a relationship between the zinc content in the diet and the risk of cancer. The anti-cancer effect of zinc is most often associated with its antioxidant properties. However, this is just one of many possibilities, including the influence of zinc on the immune system, transcription factors, cell differentiation and proliferation, DNA and RNA synthesis and repair, enzyme activation or inhibition, the regulation of cellular signaling, and the stabilization of the cell structure and membranes. This study presents selected issues regarding the current knowledge of anti-cancer mechanisms involving this element.
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Affiliation(s)
- Dorota Skrajnowska
- Department of Bromatology, Medical University of Warsaw, Banacha 1, 02-097 Warsaw, Poland.
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21
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Tolba MF, Omar HA, Hersi F, Nunes ACF, Noreddin AM. The impact of Catechol-O-methyl transferase knockdown on the cell proliferation of hormone-responsive cancers. Mol Cell Endocrinol 2019; 488:79-88. [PMID: 30904591 DOI: 10.1016/j.mce.2019.03.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/09/2018] [Revised: 02/24/2019] [Accepted: 03/17/2019] [Indexed: 02/07/2023]
Abstract
Estrogen (E2) plays a central role in the development and progression of hormone-responsive cancers. Estrogen metabolites exhibit either stimulatory or inhibitory roles on breast and prostate cells. The catechol metabolite 4-hydroxyestradiol (4-OHE2) enhances cell proliferation, while 2-methoxyestradiol (2 ME) possesses anticancer activity. The major metabolizing enzyme responsible for detoxifying the deleterious metabolite 4-OHE2 and forming the anticancer metabolite 2 ME is Catechol-O-Methyl Transferase (COMT). The current work investigated the relationship between the expression level of COMT and the cell proliferation of hormone-responsive cancers. The results showed that COMT silencing enhanced the cell proliferation of ER-α positive cancer cells MCF-7 and PC-3 but not the cells that lack ER-α expression as MDA-MB231 and DU-145. The data generated from our study provides a better understanding of the effect of COMT on critical signaling pathways involved in the development and progression of breast cancer (BC) and prostate cancer (PC) including ER-α, p21cip1, p27kip1, NF-κB (P65) and CYP19A1. These findings suggest that COMT enzyme plays a tumor suppressor role in hormone receptor-positive tumors which opens the door for future studies to validate COMT expression as a novel biomarker for the prediction of cancer aggressiveness and treatment efficacy.
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Affiliation(s)
- Mai F Tolba
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Ain Shams University, Cairo 11566, Egypt; Chapman University School of Pharmacy, Irvine, CA 92618, USA; School of Medicine, University of California, Irvine, CA, USA.
| | - Hany A Omar
- College of Pharmacy, University of Sharjah, Sharjah 27272, United Arab Emirates; Department of Pharmacology and Toxicology, Faculty of Pharmacy, Beni-Suef University, Beni-Suef, 62511 Egypt; Sharjah Institute for Medical Research, University of Sharjah, Sharjah 27272, United Arab Emirates.
| | - Fatima Hersi
- Sharjah Institute for Medical Research, University of Sharjah, Sharjah 27272, United Arab Emirates
| | - Ane C F Nunes
- Division of Nephrology and Hypertension, School of Medicine, University of California, Irvine, CA 92697, USA
| | - Ayman M Noreddin
- Chapman University School of Pharmacy, Irvine, CA 92618, USA; School of Medicine, University of California, Irvine, CA, USA; College of Pharmacy, University of Sharjah, Sharjah 27272, United Arab Emirates
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22
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Poch A, Villanelo F, Henriquez S, Kohen P, Muñoz A, Strauss JF, Devoto L. Molecular modelling predicts that 2-methoxyestradiol disrupts HIF function by binding to the PAS-B domain. Steroids 2019; 144:21-29. [PMID: 30738071 DOI: 10.1016/j.steroids.2019.02.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/10/2018] [Revised: 01/17/2019] [Accepted: 02/04/2019] [Indexed: 01/28/2023]
Abstract
An estradiol metabolite, 2-methoxyestradiol (2ME), has emerged as an important regulator of ovarian physiology. 2ME is recognized as a potent anti-angiogenic agent in clinical trials and laboratory studies. However, little is known about its molecular actions and its endogenous targets. 2ME is produced by human ovarian cells during the normal menstrual cycle, being higher during regression of the corpus luteum, and is postulated to be involved in the anti-angiogenic process that plays out during luteolysis. We utilized cell biology techniques to understand the molecular mechanism of 2ME anti-angiogenic effects on human granulosa luteal cells. The principal effect of 2ME was to alter Hypoxia Inducible Factor 1A (HIF1A) sub-cellular localization. Molecular modelling and multiple bioinformatics tools indicated that 2ME impairs Hypoxia Inducible Factor complex (HIF) nuclear translocation by binding to a buried pocket in the HIF1A Per Arnt Sim (PAS)-B domain. Binding of 2ME to HIF1A protein is predicted to perturb HIF1A-Hypoxia Inducible Factor B (HIFB) interaction, a key step in HIF nuclear translocation, preventing the transcriptional actions of HIF, including Vascular Endotelial Growth Factor (VEGF) gene activation. To our knowledge, 2ME is the first putative HIF endogenous ligand characterized with anti-angiogenic activity. This postulate has important implications for reproduction, because angiogenic processes are critical for ovarian follicular development, ovulation and corpus luteum regression. The present research could contribute to the development of novel pharmacological approaches for controlling HIF activity in human reproductive diseases.
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Affiliation(s)
- Andrea Poch
- Institute for Maternal and Child Research (IDIMI), School of Medicine, University of Chile, Avenida Santa Rosa 1234, 8360160 Santiago-Centro, Santiago, Chile
| | - Felipe Villanelo
- Computational Biology Lab (DLab), Fundación Ciencia & Vida. Avenida Zañartu 1482, 7780272 Ñuñoa, Santiago, Chile; Centro Interdisciplinario de Neurociencias de Valparaíso, Universidad de Valparaíso, Harrington 287, Valparaíso, Chile
| | - Soledad Henriquez
- Institute for Maternal and Child Research (IDIMI), School of Medicine, University of Chile, Avenida Santa Rosa 1234, 8360160 Santiago-Centro, Santiago, Chile
| | - Paulina Kohen
- Institute for Maternal and Child Research (IDIMI), School of Medicine, University of Chile, Avenida Santa Rosa 1234, 8360160 Santiago-Centro, Santiago, Chile
| | - Alex Muñoz
- Institute for Maternal and Child Research (IDIMI), School of Medicine, University of Chile, Avenida Santa Rosa 1234, 8360160 Santiago-Centro, Santiago, Chile
| | - Jerome F Strauss
- Department of Obstetrics and Gynecology, School of Medicine, Virginia Commonwealth University, Sanger Hall, 1101 E Marshall St., 980565 Richmond, VA, USA
| | - Luigi Devoto
- Institute for Maternal and Child Research (IDIMI), School of Medicine, University of Chile, Avenida Santa Rosa 1234, 8360160 Santiago-Centro, Santiago, Chile; Department of Obstetrics and Gynecology, School of Medicine, San Borja-Arriaran Clinical Hospital, University of Chile, Avenida Santa Rosa 1234, 8360160 Santiago-Centro, Santiago, Chile.
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Li Y, Wu L, Yu M, Yang F, Wu B, Lu S, Tu M, Xu H. HIF-1α is Critical for the Activation of Notch Signaling in Neurogenesis During Acute Epilepsy. Neuroscience 2018; 394:206-219. [PMID: 30394322 DOI: 10.1016/j.neuroscience.2018.10.037] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Revised: 09/30/2018] [Accepted: 10/22/2018] [Indexed: 01/01/2023]
Abstract
Emerging evidence suggests that hypoxia-inducible factors (specifically, HIF-1α) and Notch signaling are involved in epileptogenesis and that cross-coupling exists between HIF-1α and Notch signaling in other diseases, including tumors and ischemia. However, the exact molecular mechanisms by which HIF-1α and Notch signaling affect the development of epilepsy, especially regarding neurogenesis, remain unclear. In the present study, we investigated the role of HIF-1α in neurogenesis and whether Notch signaling is involved in this process during epileptogenesis by assessing hippocampal apoptosis, neuronal injury, and the proliferation and differentiation of neural stem cells (NSCs) in four groups, including control, epilepsy, epilepsy+2-methoxyestradiol (2ME2) and epilepsy+GSI-IX (DAPT) groups. Our data demonstrated that HIF-1α mediated neurogenesis during acute epilepsy, which required the participation of Notch signaling. The immunoprecipitation data illustrated that HIF-1α activated Notch signaling by physically interacting with the Notch intracellular domain (NICD) in epilepsy. In conclusion, our results suggested that HIF-1α-Notch signaling enhanced neurogenesis in acute epilepsy and that neurogenesis during epileptogenesis was reduced once this pathway was blocked; thus, members of this pathway might be potential therapeutic targets for epilepsy.
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Affiliation(s)
- Yushuang Li
- Department of Radiology, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan 430071, PR China
| | - Lei Wu
- Department of Radiology, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan 430071, PR China
| | - Minhua Yu
- Department of Radiology, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan 430071, PR China
| | - Fei Yang
- Department of Radiology, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan 430071, PR China
| | - Bo Wu
- Department of Radiology, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan 430071, PR China
| | - Shuting Lu
- Department of Radiology, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan 430071, PR China
| | - Mengqi Tu
- Department of Radiology, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan 430071, PR China
| | - Haibo Xu
- Department of Radiology, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan 430071, PR China.
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The in vitro effects of a novel estradiol analog on cell proliferation and morphology in human epithelial cervical carcinoma. Cell Mol Biol Lett 2018; 23:10. [PMID: 29568313 PMCID: PMC5859677 DOI: 10.1186/s11658-018-0079-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2017] [Accepted: 03/12/2018] [Indexed: 01/04/2023] Open
Abstract
Background The majority of novel chemotherapeutics target the cell cycle, aiming to effect arrest and cause apoptosis. One such agent, 2-methoxyestradiol (2ME), has been shown to possess anticancer properties against numerous cancer types, both in vitro and in vivo. Despite its promise, 2ME has exhibited limitations, including low oral bioavailability and rapid hepatic enzymatic inactivation in vivo. A novel sulphamoylated estrogen analog, 2-ethyl-3-O-sulphamoyl-estra-1,3,5(10)16-tetraene (ESE-16), was in silico-designed in our laboratory to overcome these issues. It was then synthesized by a pharmaceutical company and used in an in vitro antiproliferative effect study on a human cervical carcinoma (HeLa) cell line. Results Cell proliferation data obtained from the crystal violet assay and real-time cell analysis demonstrated that 0.2 μM of ESE-16 had a significant inhibitory effect on the HeLa cells 24 h post-exposure. Immunofluorescence showed that ESE-16 is a microtubule disruptor that causes cells to undergo a mitotic block. Qualitative morphological studies using polarization-optical transmitted light differential interference contrast (PlasDIC) and light microscopy revealed a decrease in cell density and an increase in the number of cells arrested in metaphase. After ESE-16 exposure, hallmarks of apoptosis were also observed, including membrane blebbing, chromatin condensation and the presence of apoptotic bodies. Flow cytometry provided quantitative results from cell cycle progression analysis, indicating cells undergoing apoptosis and cells in the G2/M phase of the cell cycle, confirming cell cycle arrest in metaphase after ESE-16 treatment. Quantification of the ESE-16-mediated upregulation of cyclin B in HeLa cells and spectrophotometric and flow cytometric confirmation of cell death via apoptosis further confirmed the substance's impact. Conclusion ESE-16 exerts its antiproliferative effects through microtubule disruption, which induces a mitotic block culminating in apoptosis. This research provided information on ESE-16 as a potential antitumor agent and on cellular targets that could aid in the design of prospective microtubule-disrupting compounds. Further in vitro and in vivo investigations of this novel compound are needed.
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25
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Devoto L, Henríquez S, Kohen P, Strauss JF. The significance of estradiol metabolites in human corpus luteum physiology. Steroids 2017; 123:50-54. [PMID: 28502859 DOI: 10.1016/j.steroids.2017.05.002] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/26/2016] [Revised: 04/21/2017] [Accepted: 05/03/2017] [Indexed: 12/29/2022]
Abstract
The human corpus luteum (CL) is a temporary endocrine gland derived from the ovulated follicle. Its formation and limited lifespan is critical for steroid hormone production required to support menstrual cyclicity, endometrial receptivity for successful implantation, and the maintenance of early pregnancy. Endocrine and paracrine-autocrine molecular mechanisms associated with progesterone production throughout the luteal phase are critical for the development, maintenance, regression, and rescue by hCG which sustains CL function into early pregnancy. However, the signaling systems driving the regression of the primate corpus luteum in non-conception cycles are not well understood. Recently, there has been interest in the functional roles of estradiol metabolites (EMs), mostly in estrogen-producing tissues. The human CL produces a number of EMs, and it has been postulated that the EMs acting via paracrine-autocrine pathways affect angiogenesis or LH-mediated events. The present review describes advances in understanding the role of EMs in the functional lifespan and regression of the human CL in non-conception cycles.
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Affiliation(s)
- Luigi Devoto
- Institute for Maternal and Child Research (IDIMI), Chile; Department of Obstetrics and Gynecology, Faculty of Medicine, San Borja-Arriaran Clinical Hospital, University of Chile, Santiago, Chile.
| | | | - Paulina Kohen
- Institute for Maternal and Child Research (IDIMI), Chile
| | - Jerome F Strauss
- Department of Obstetrics and Gynecology, School of Medicine, Virginia Commonwealth University, Richmond, Virginia, United States
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2-Methoxyestradiol protects against IgG immune complex-induced acute lung injury by blocking NF-κB and CCAAT/enhancer-binding protein β activities. Mol Immunol 2017; 85:89-99. [PMID: 28214650 DOI: 10.1016/j.molimm.2017.02.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2016] [Revised: 02/08/2017] [Accepted: 02/09/2017] [Indexed: 11/20/2022]
Abstract
Increasing evidences indicate that 2-Methoxyestradiol (2ME2) plays an essential role in protecting against inflammatory responses. However, its effect on IgG immune complex (IC)-induced acute lung injury (ALI) remains enigmatic. In the study, by using i.p. administration of 2ME2, we evaluated its influence on IgG IC-induced pulmonary injury in mice. We found that during IgG IC-induced ALI, mice treated by 2ME2 displayed a substantial decrease in vascular permeability and neutrophil influx (represented by myeloperoxidase activity) when compared with their counterparts receiving vehicle treatment. Furthermore, 2ME2 treatment significantly decreased pro-inflammatory mediator production and inflammatory cell, especially neutrophil accumulation in bronchoalveolar lavage fluids (BALFs) upon IgG IC stimulation. In vitro, IgG IC-triggered inflammatory mediator production was markedly down-regulated by 2ME2 in macrophages. Moreover, we verified that the activation of the transcription factors, NF-κB and CCAAT/enhancer-binding protein (C/EBP) β, were inhibited by 2ME2 in IgG IC-challenged macrophages. We demonstrated that alleviation of NF-κB-dependent transcription might be associated with reduced phosphorylation of NF-κB p65, and reduction of C/EBP activation was directly linked to its expression. In addition, we discovered that IgG IC-stimulated phosphorylation of both p38 MAPK and ERK1/2 was alleviated by 2ME2. These data indicated a novel strategy for blockade of IgG IC-induced inflammatory activities.
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Massaro RR, Faião-Flores F, Rebecca VW, Sandri S, Alves-Fernandes DK, Pennacchi PC, Smalley KSM, Maria-Engler SS. Inhibition of proliferation and invasion in 2D and 3D models by 2-methoxyestradiol in human melanoma cells. Pharmacol Res 2017; 119:242-250. [PMID: 28212889 DOI: 10.1016/j.phrs.2017.02.013] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Revised: 02/08/2017] [Accepted: 02/08/2017] [Indexed: 12/12/2022]
Abstract
Despite the recent advances in the clinical management of melanoma, there remains a need for new pharmacological approaches to treat this cancer. 2-methoxyestradiol (2ME) is a metabolite of estrogen that has shown anti-tumor effects in many cancer types. In this study we show that 2ME treatment leads to growth inhibition in melanoma cells, an effect associated with entry into senescence, decreased pRb and Cyclin B1 expression, increased p21/Cip1 expression and G2/M cell cycle arrest. 2ME treatment also inhibits melanoma cell growth in colony formation assay, including cell lines with acquired resistance to BRAF and BRAF+MEK inhibitors. We further show that 2ME is effective against melanoma with different BRAF and NRAS mutational status. Moreover, 2ME induced the retraction of cytoplasmic projections in a 3D spheroid model and significantly decreased cell proliferation in a 3D skin reconstruct model. Together our studies bring new insights into the mechanism of action of 2ME allowing melanoma targeted therapy to be further refined. Continued progress in this area is expected to lead to improved anti-cancer treatments and the development of new and more effective clinical analogues.
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Affiliation(s)
- R R Massaro
- Department of Clinical Chemistry & Toxicology, School of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil
| | - F Faião-Flores
- Department of Clinical Chemistry & Toxicology, School of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil
| | - V W Rebecca
- The Department of Tumor Biology, The Moffitt Cancer Center & Research Institute, Tampa, USA
| | - S Sandri
- Department of Clinical Chemistry & Toxicology, School of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil
| | - D K Alves-Fernandes
- Department of Clinical Chemistry & Toxicology, School of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil
| | - P C Pennacchi
- Department of Clinical Chemistry & Toxicology, School of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil
| | - K S M Smalley
- The Department of Tumor Biology, The Moffitt Cancer Center & Research Institute, Tampa, USA
| | - S S Maria-Engler
- Department of Clinical Chemistry & Toxicology, School of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil.
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28
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Bózsity N, Minorics R, Szabó J, Mernyák E, Schneider G, Wölfling J, Wang HC, Wu CC, Ocsovszki I, Zupkó I. Mechanism of antiproliferative action of a new d-secoestrone-triazole derivative in cervical cancer cells and its effect on cancer cell motility. J Steroid Biochem Mol Biol 2017; 165:247-257. [PMID: 27363663 DOI: 10.1016/j.jsbmb.2016.06.013] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2016] [Revised: 06/24/2016] [Accepted: 06/27/2016] [Indexed: 12/24/2022]
Abstract
Cervical cancer is the fourth most frequently diagnosed tumor and the fourth leading cause of cancer death in females worldwide. Cervical cancer is predominantly related with human papilloma virus (HPV) infection, with the most oncogenic types being HPV-18 and -16. Our previous studies demonstrated that some d-secoestrone derivatives exert pronounced antiproliferative activity. The aim of the current investigation was to characterize the mechanism of action of d-secoestrone-triazole (D-SET) on three cervical cancer cell lines with different pathological backgrounds. The growth-inhibitory effects of D-SET were determined by a standard MTT assay. We have found that D-SET exerts a pronounced growth-inhibitory effect on HPV 18-positive HeLa and HPV-negative C-33 A cells, but it has no substantial inhibitory activity on HPV 16-positive SiHa or on intact fibroblast MRC-5 cell lines. After 24h incubation, cells showed the morphological and biochemical signs of apoptosis determined by fluorescent double staining, flow cytometry and caspase-3 activity assay. Besides the elevation of the ratio of cells in the subG1 phase, flow cytometric analysis revealed a cell cycle arrest at G2/M in both HeLa and C-33 A cell lines. To distinguish the G2/M cell population immunocytochemical flow cytometric analysis was performed on HeLa cells. The results show that D-SET significantly increases the ratio of phosphorylated histone H3, indicating cell accumulation in the M phase. Additionally, D-SET significantly increased the maximum rate of microtube formation measured by an in vitro tubulin polymerization assay. Besides its direct antiproliferative activity, the antimigratory property of D-SET has been investigated. Our results demonstrate that D-SET significantly inhibits the migration and invasion of HeLa cells after 24h incubation. These results suggests that D-SET is a potent antiproliferative agent against HPV 16+ and HPV-negative cervical cancer cell lines, with an efficacious motility-inhibiting activity against HPV 16+ cells. Accordingly D-SET can be regarded as a potential drug candidate with a promising new mechanism of action among the antiproliferative steroids, potentially allowing for the design of novel anticancer agents.
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Affiliation(s)
- Noémi Bózsity
- Department of Pharmacodynamics and Biopharmacy, University of Szeged, Eötvös u. 6, H-6720 Szeged, Hungary
| | - Renáta Minorics
- Department of Pharmacodynamics and Biopharmacy, University of Szeged, Eötvös u. 6, H-6720 Szeged, Hungary
| | - Johanna Szabó
- Department of Organic Chemistry, University of Szeged, Dóm tér 8, H-6720 Szeged, Hungary
| | - Erzsébet Mernyák
- Department of Organic Chemistry, University of Szeged, Dóm tér 8, H-6720 Szeged, Hungary
| | - Gyula Schneider
- Department of Organic Chemistry, University of Szeged, Dóm tér 8, H-6720 Szeged, Hungary
| | - János Wölfling
- Department of Organic Chemistry, University of Szeged, Dóm tér 8, H-6720 Szeged, Hungary
| | - Hui-Chun Wang
- Graduate Institute of Natural Products, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Chin-Chung Wu
- Graduate Institute of Natural Products, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Imre Ocsovszki
- Department of Biochemistry, University of Szeged, Dóm tér 9, H-6720 Szeged, Hungary
| | - István Zupkó
- Department of Pharmacodynamics and Biopharmacy, University of Szeged, Eötvös u. 6, H-6720 Szeged, Hungary.
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29
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Mallery SR, Wang D, Santiago B, Pei P, Schwendeman SP, Nieto K, Spinney R, Tong M, Koutras G, Han B, Holpuch A, Lang J. Benefits of Multifaceted Chemopreventives in the Suppression of the Oral Squamous Cell Carcinoma (OSCC) Tumorigenic Phenotype. Cancer Prev Res (Phila) 2017; 10:76-88. [PMID: 27756753 PMCID: PMC5222683 DOI: 10.1158/1940-6207.capr-16-0180] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2016] [Revised: 10/06/2016] [Accepted: 10/07/2016] [Indexed: 12/25/2022]
Abstract
Over one third of patients who have undergone oral squamous cell carcinoma (OSCC) surgical resections develop life-threatening and often untreatable recurrences. A variety of drugs, intended for management of recurrent or disseminated cancers, were designed to exploit cancer cells' reliance upon overexpressed receptors and gratuitous signaling. Despite their conceptual promise, clinical trials showed these agents lacked efficacy and were often toxic. These findings are consistent with evasion of pathway-targeted treatments via extensive signaling redundancies and compensatory mechanisms common to cancers. Optimal secondary OSCC chemoprevention requires long-term efficacy with multifaceted, nontoxic agents. Accordingly, this study evaluated the abilities of three complementary chemopreventives, that is, the vitamin A derivative fenretinide (4-HPR, induces apoptosis and differentiation, inhibits signaling proteins, and invasion), the estrogen metabolite 2-methoxyestradiol (2-ME, apoptosis-inducing, antiangiogenic), and the humanized mAb to the IL6R receptor tocilizumab (TOC, reduces IL6 signaling) to suppress OSCC gratuitous signaling and tumorigenesis. Modeling studies demonstrated 4-HPR's high-affinity binding at STAT3's dimerization site and c-Abl and c-Src ATP-binding kinase sites. Although individual agents suppressed cancer-promoting pathways including STAT3 phosphorylation, STAT3-DNA binding, and production of the trans-signaling enabling sIL6R, maximal chemopreventive effects were observed with agent combinations. OSCC tumor xenograft studies showed that locally delivered TOC, TOC+4-HPR, and TOC+4-HPR+2-ME treatments all prevented significant tumor growth. Notably, the TOC+4-HPR+2-ME treatment resulted in the smallest overall increase in tumor volume. The selected agents use diverse mechanisms to disrupt tumorigenesis at multiple venues, that is, intracellular, tumor cell-ECM, and tumor microenvironment; beneficial qualities for secondary chemopreventives. Cancer Prev Res; 10(1); 76-88. ©2016 AACR.
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MESH Headings
- 2-Methoxyestradiol
- Animals
- Antibodies, Monoclonal, Humanized/administration & dosage
- Antibodies, Monoclonal, Humanized/adverse effects
- Antibodies, Monoclonal, Humanized/therapeutic use
- Anticarcinogenic Agents/administration & dosage
- Anticarcinogenic Agents/adverse effects
- Anticarcinogenic Agents/therapeutic use
- Antineoplastic Combined Chemotherapy Protocols/administration & dosage
- Antineoplastic Combined Chemotherapy Protocols/adverse effects
- Antineoplastic Combined Chemotherapy Protocols/therapeutic use
- Apoptosis/drug effects
- Carcinogenesis/drug effects
- Carcinoma, Squamous Cell/pathology
- Carcinoma, Squamous Cell/prevention & control
- Carcinoma, Squamous Cell/surgery
- Cell Differentiation/drug effects
- Cell Line, Tumor
- Estradiol/administration & dosage
- Estradiol/adverse effects
- Estradiol/analogs & derivatives
- Estradiol/therapeutic use
- Fenretinide/administration & dosage
- Fenretinide/adverse effects
- Fenretinide/therapeutic use
- Gene Expression Regulation, Neoplastic
- Humans
- Male
- Mice
- Mice, Nude
- Mouth Neoplasms/pathology
- Mouth Neoplasms/prevention & control
- Mouth Neoplasms/surgery
- Neoplasm Invasiveness
- Neoplasm Recurrence, Local/prevention & control
- Phenotype
- Phosphorylation
- Receptors, Interleukin-6/antagonists & inhibitors
- STAT3 Transcription Factor/metabolism
- Signal Transduction/drug effects
- Tumor Microenvironment/drug effects
- Xenograft Model Antitumor Assays
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Affiliation(s)
- Susan R Mallery
- Division of Oral Maxillofacial Pathology & Radiology, College of Dentistry, The Ohio State University, Columbus, Ohio.
- The Ohio State University Comprehensive Cancer, Columbus, Ohio
| | - Daren Wang
- Division of Oral Maxillofacial Pathology & Radiology, College of Dentistry, The Ohio State University, Columbus, Ohio
| | - Brian Santiago
- Division of Oral Maxillofacial Pathology & Radiology, College of Dentistry, The Ohio State University, Columbus, Ohio
| | - Ping Pei
- Division of Oral Maxillofacial Pathology & Radiology, College of Dentistry, The Ohio State University, Columbus, Ohio
| | - Steven P Schwendeman
- College of Pharmacy, University of Michigan, North Campus Research Complex, Ann Arbor, Michigan
| | - Kari Nieto
- College of Pharmacy, University of Michigan, North Campus Research Complex, Ann Arbor, Michigan
| | - Richard Spinney
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, Ohio
| | - Meng Tong
- Division of Oral Maxillofacial Pathology & Radiology, College of Dentistry, The Ohio State University, Columbus, Ohio
| | - George Koutras
- Division of Oral Maxillofacial Pathology & Radiology, College of Dentistry, The Ohio State University, Columbus, Ohio
| | - Brian Han
- Division of Oral Maxillofacial Pathology & Radiology, College of Dentistry, The Ohio State University, Columbus, Ohio
| | - Andrew Holpuch
- Division of Oral Maxillofacial Pathology & Radiology, College of Dentistry, The Ohio State University, Columbus, Ohio
| | - James Lang
- The Ohio State University Comprehensive Cancer, Columbus, Ohio
- Department of Otolaryngology, College of Medicine, Ohio State University, Columbus, Ohio
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30
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GSNO promotes functional recovery in experimental TBI by stabilizing HIF-1α. Behav Brain Res 2016; 340:63-70. [PMID: 27780722 DOI: 10.1016/j.bbr.2016.10.037] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2016] [Revised: 10/01/2016] [Accepted: 10/21/2016] [Indexed: 12/20/2022]
Abstract
Traumatic brain injury (TBI) causes sustained disability due to compromised neurorepair mechanisms. Crucial to neurorepair and functional recovery following both TBI and stroke is hypoxia-inducible factor-1 alpha (HIF-1α). Based on reports that HIF-1α could be stabilized via S-nitrosylation, we tested the hypothesis that the S-nitrosylating agent S-nitrosoglutathione (GSNO) would stabilize HIF-1α, thereby stimulating neurorepair mechanisms and aiding in functional recovery. TBI was induced by controlled cortical impact (CCI) in adult rats. GSNO (0.05mg/kg) was administered at two hours after CCI. The treatment was repeated daily until the 14th day after CCI. Functional recovery was assessed by motor and cognitive functions, and the recovery was compared with the expression of HIF-1α. The mechanisms of GSNO-mediated S-nitrosylation of HIF-1α were determined using brain endothelial cells. While non-treated TBI animals showed sustained neurobehavioral deficits, GSNO treatment of TBI improved neurobehavioral functions. GSNO also increased the expression of HIF-1α and VEGF. The beneficial effects of GSNO on neurobehavioral functions in TBI animals were blocked by treatment with the HIF-1α inhibitor 2-methoxyestradiol (2-ME). The stimulatory effect of GSNO on VEGF was reversed not only by 2-ME but also by the denitrosylating agent dithiothreitol, confirming our hypothesis that GSNO's benefits are mediated by the stabilization of HIF-1α via S-nitrosylation. GSNO's S-nitrosylation of HIF-1α was further confirmed using a biotin switch assay in endothelial cells. The data provide evidence that GSNO treatment of TBI aids functional recovery through stabilizing HIF-1α via S-nitrosylation. GSNO is a natural component of the human brain/body, and its exogenous administration has not shown adverse effects in humans. Therefore, the translational potential of GSNO therapy in TBI is high.
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31
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Lin N, Simon MC. Hypoxia-inducible factors: key regulators of myeloid cells during inflammation. J Clin Invest 2016; 126:3661-3671. [PMID: 27599290 DOI: 10.1172/jci84426] [Citation(s) in RCA: 94] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Hypoxia is a prominent characteristic of many acute or chronic inflammatory diseases, and exerts significant influence on their progression. Macrophages and neutrophils are major cellular components of innate immunity and contribute not only to O2 deprivation at the site of inflammation, but also alter many of their functions in response to hypoxia to either facilitate or suppress inflammation. Hypoxia stabilizes HIF-αs in macrophages and neutrophils, and these O2-sensitive transcription factors are key regulators of inflammatory responses in myeloid cells. In this review, we will summarize our current understanding of the role of HIF-αs in shaping macrophage and neutrophil functions in the pathogenesis and progression of multiple inflammatory diseases.
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32
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Henríquez S, Kohen P, Xu X, Veenstra TD, Muñoz A, Palomino WA, Strauss JF, Devoto L. Estrogen metabolites in human corpus luteum physiology: differential effects on angiogenic activity. Fertil Steril 2016; 106:230-237.e1. [DOI: 10.1016/j.fertnstert.2016.03.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2015] [Revised: 02/23/2016] [Accepted: 03/03/2016] [Indexed: 02/06/2023]
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33
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Kumar BS, Raghuvanshi DS, Hasanain M, Alam S, Sarkar J, Mitra K, Khan F, Negi AS. Recent Advances in chemistry and pharmacology of 2-methoxyestradiol: An anticancer investigational drug. Steroids 2016; 110:9-34. [PMID: 27020471 DOI: 10.1016/j.steroids.2016.03.017] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2015] [Revised: 02/13/2016] [Accepted: 03/22/2016] [Indexed: 01/29/2023]
Abstract
2-Methoxyestradiol (2ME2), an estrogen hormone metabolite is a potential cancer chemotherapeutic agent. Presently, it is an investigational drug under various phases of clinical trials alone or in combination therapy. Its anticancer activity has been attributed to its antitubulin, antiangiogenic, pro-apoptotic and ROS induction properties. This anticancer drug candidate has been explored extensively in last twenty years for its detailed chemistry and pharmacology. Present review is an update of its chemistry and biological activity. It also extends an assessment of potential of 2ME2 and its analogues as possible anticancer drug in future.
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Affiliation(s)
- B Sathish Kumar
- CSIR-Central Institute of Medicinal and Aromatic Plants (CSIR-CIMAP), Kukrail Picnic Spot Road, P.O. CIMAP, Lucknow 226015, India
| | - Dushyant Singh Raghuvanshi
- CSIR-Central Institute of Medicinal and Aromatic Plants (CSIR-CIMAP), Kukrail Picnic Spot Road, P.O. CIMAP, Lucknow 226015, India
| | - Mohammad Hasanain
- CSIR-Central Drug Research Institute (CSIR-CDRI), B.S. 10/1, Sector 10, Jankipuram Extension, Sitapur Road, Lucknow 226031, India
| | - Sarfaraz Alam
- CSIR-Central Institute of Medicinal and Aromatic Plants (CSIR-CIMAP), Kukrail Picnic Spot Road, P.O. CIMAP, Lucknow 226015, India
| | - Jayanta Sarkar
- CSIR-Central Drug Research Institute (CSIR-CDRI), B.S. 10/1, Sector 10, Jankipuram Extension, Sitapur Road, Lucknow 226031, India
| | - Kalyan Mitra
- CSIR-Central Drug Research Institute (CSIR-CDRI), B.S. 10/1, Sector 10, Jankipuram Extension, Sitapur Road, Lucknow 226031, India
| | - Feroz Khan
- CSIR-Central Institute of Medicinal and Aromatic Plants (CSIR-CIMAP), Kukrail Picnic Spot Road, P.O. CIMAP, Lucknow 226015, India
| | - Arvind S Negi
- CSIR-Central Institute of Medicinal and Aromatic Plants (CSIR-CIMAP), Kukrail Picnic Spot Road, P.O. CIMAP, Lucknow 226015, India.
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34
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Valencia C, Molina C, Florez M, Buñay J, Moreno RD, Orihuela PA, Castro A, Parada-Bustamante A. 2-hydroxyoestradiol and 2-methoxyoestradiol, two endogenous oestradiol metabolites, induce DNA fragmentation in Sertoli cells. Andrologia 2016; 48:1294-1306. [PMID: 27071496 DOI: 10.1111/and.12576] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/03/2016] [Indexed: 01/14/2023] Open
Abstract
Elevated intratesticular levels of hydroxyoestradiols and methoxyoestradiols, two classes of endogenous oestradiol metabolites, have been associated with male infertility. The aim of this study was to explore the effects of 2-hydroxyoestradiol (2OHE2 ), 4-hydroxyoestradiol (4OHE2 ), 2-methoxyoestradiol (2ME2 ) and 4-methoxyoestradiol (4ME2 ) on Sertoli cell viability. For this, TM4 cells were incubated with different concentrations of these metabolites for 24 h to then evaluate the viability and DNA integrity by MTS and TUNEL assay respectively. The participation of classical oestrogen receptors and the involvement of oxidative stress and apoptotic mechanisms were also evaluated co-incubating TM4 cells with these estradiol metabolites and with the drugs ICI182780, N-acetylcysteine and Z-VAD-FMK respectively. Only high concentrations of 2OHE2 and 2ME2 decreased cell viability inducing DNA fragmentation. In addition, ICI182780 did not block the effect of 2OHE2 and 2ME2 , while N-Acetylcysteine and Z-VAD-FMK only blocked the effect of 2OHE2 . Moreover, 2OHE2 but not 2ME2 induced PARP and caspase-3 cleavage. Finally, lower 2OHE2 and 2ME2 concentrations (0.01-0.1-1.0 μmol l-1 ) decreased Sertoli cell viability 48 h post-treatment. Our results support the hypothesis that elevated intratesticular 2OHE2 or 2ME2 concentrations could be related to male infertility since 2OHE2 by apoptosis and 2ME2 by undetermined mechanisms induce DNA fragmentation in Sertoli cells.
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Affiliation(s)
- C Valencia
- Instituto de Investigaciones Materno Infantil, Facultad de Medicina, Universidad de Chile, Santiago, Chile
| | - C Molina
- Instituto de Investigaciones Materno Infantil, Facultad de Medicina, Universidad de Chile, Santiago, Chile
| | - M Florez
- Instituto de Investigaciones Materno Infantil, Facultad de Medicina, Universidad de Chile, Santiago, Chile
| | - J Buñay
- Departamento de Fisiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - R D Moreno
- Departamento de Fisiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - P A Orihuela
- Laboratorio de Inmunología de la Reproducción y CEDENNA, Universidad de Santiago de Chile, Santiago, Chile
| | - A Castro
- Instituto de Investigaciones Materno Infantil, Facultad de Medicina, Universidad de Chile, Santiago, Chile
| | - A Parada-Bustamante
- Instituto de Investigaciones Materno Infantil, Facultad de Medicina, Universidad de Chile, Santiago, Chile
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Akhenblit PJ, Pagel MD. Recent Advances in Targeting Tumor Energy Metabolism with Tumor Acidosis as a Biomarker of Drug Efficacy. ACTA ACUST UNITED AC 2016; 8:20-29. [PMID: 26962408 PMCID: PMC4780427 DOI: 10.4172/1948-5956.1000382] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Cancer cells employ a deregulated cellular metabolism to leverage survival and growth advantages. The unique tumor energy metabolism presents itself as a promising target for chemotherapy. A pool of tumor energy metabolism targeting agents has been developed after several decades of efforts. This review will cover glucose and fatty acid metabolism, PI3K/AKT/mTOR, HIF-1 and glutamine pathways in tumor energy metabolism, and how they are being exploited for treatments and therapies by promising pre-clinical or clinical drugs being developed or investigated. Additionally, acidification of the tumor extracellular microenvironment is hypothesized to be the result of active tumor metabolism. This implies that tumor extracellular pH (pHe) can be a biomarker for assessing the efficacy of therapies that target tumor metabolism. Several translational molecular imaging methods (PET, MRI) for interrogating tumor acidification and its suppression are discussed as well.
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Affiliation(s)
- Paul J Akhenblit
- Cancer Biology Graduate Interdisciplinary Program, University of Arizona, Tucson, AZ, USA
| | - Mark D Pagel
- Cancer Biology Graduate Interdisciplinary Program, University of Arizona, Tucson, AZ, USA; Department of Medical Imaging, University of Arizona, Tucson, AZ, USA
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Eyvazzadeh N, Neshasteh-Riz A, Mahdavi SR, Mohsenifar A. Genotoxic Damage to Glioblastoma Cells Treated with 6 MV X-Radiation in The Presence or Absence of Methoxy Estradiol, IUDR or Topotecan. CELL JOURNAL 2015. [PMID: 26199910 PMCID: PMC4503845 DOI: 10.22074/cellj.2016.3738] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Objective To explore the cumulative genotoxic damage to glioblastoma (GBM) cells,
grown as multicellular spheroids, following exposure to 6 MV X-rays (2 Gy, 22 Gy) with or
without, 2- methoxy estradiol (2ME2), iododeoxyuridine (IUDR) or topotecan (TPT), using
the Picogreen assay.
Materials and Methods The U87MG cells cultured as spheroids were treated with 6
MV X-ray using linear accelerator. Specimens were divided into five groups and irradiated using X-ray giving the dose of 2 Gy after sequentially incubated with one of
the following three drug combinations: TPT, 2-ME2/TPT, IUDR/TPT or 2ME2/IUDR/
TPT. One specimen was used as the irradiated only sample (R). The last group was
also irradiated with total dose of 22 Gy (each time 2 Gy) of 6 MV X-ray in 11 fractions
and treated for three times. DNA damage was evaluated using the Picogreen method
in the experimental study.
Results R/TPT treated group had more DNA damage [double strand break (DSB)/single strand break (SSB)] compared with the untreated group (P<0.05). Moreover the R/
TPT group treated with 2ME2 followed by IUDR had maximum DNA damage in spheroid
GBM indicating an augmented genotoxicity in the cells. The DNA damage was induced
after seven fractionated irradiation and two sequential treatments with 2ME2/IUDR/TPT.
To ensure accuracy of the slope of dose response curve the fractionated radiation was
calculated as 7.36 Gy with respect to α/β ratio based on biologically effective dose (BED)
formulae.
Conclusion Cells treated with 2ME2/IUDR showed more sensitivity to radiation and
accumulative DNA damage. DNA damage was significantly increased when GBM
cells treated with TPT ceased at S phase due to the inhibition of topoisomerase
enzyme and phosphorylation of Chk1 enzyme. These results suggest that R/TPT-
treated cells increase sensitivity to 2ME2 and IUDR especially when they are used
together. Therefore, due to an increase in the level of DNA damage (SSB vs. DSB)
and impairment of DNA repair machinery, more cell death will occur. This in turn may
improve the treatment of GBM.
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Affiliation(s)
- Nazila Eyvazzadeh
- Radiation Research Center, Faculty of Paramedicine, AJA University of Medical Sciences, Tehran, Iran
| | - Ali Neshasteh-Riz
- Department of Radiology, Faculty of Allied Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Seyed Rabee Mahdavi
- Department of Medical Physics, Faculty of Medicine, Iran University of Medical Sciences, Tehran, Iran
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Khan M, Dhammu TS, Matsuda F, Baarine M, Dhindsa TS, Singh I, Singh AK. Promoting endothelial function by S-nitrosoglutathione through the HIF-1α/VEGF pathway stimulates neurorepair and functional recovery following experimental stroke in rats. DRUG DESIGN DEVELOPMENT AND THERAPY 2015; 9:2233-47. [PMID: 25945035 PMCID: PMC4408969 DOI: 10.2147/dddt.s77115] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Background For stroke patients, stimulating neurorepair mechanisms is necessary to reduce morbidity and disability. Our previous studies on brain and spinal cord trauma show that exogenous treatment with the S-nitrosylating agent S-nitrosoglutathione (GSNO) – a nitric oxide and glutathione metabolite of the human body – stimulates neurorepair and aids functional recovery. Using a rat model of cerebral ischemia and reperfusion (IR) in this study, we tested the hypothesis that GSNO invokes the neurorepair process and improves neurobehavioral functions through the angiogenic HIF-1α/VEGF pathway. Methods Stroke was induced by middle cerebral artery occlusion for 60 minutes followed by reperfusion in adult male rats. The injured animals were treated with saline (IR group, n=7), GSNO (0.25 mg/kg, GSNO group, n=7), and GSNO plus the HIF-1α inhibitor 2-methoxyestra-diol (2-ME) (0.25 mg/kg GSNO + 5.0 mg/kg 2-ME, GSNO + 2-ME group, n=7). The groups were studied for either 7 or 14 days to determine neurorepair mediators and functional recovery. Brain capillary endothelial cells were used to show that GSNO promotes angiogenesis and that GSNO-mediated induction of VEGF and the stimulation of angiogenesis are dependent on HIF-1α activity. Results IR injury increased the expression of neurorepair mediators HIF-1α, VEGF, and PECAM-1 and vessel markers to a limited degree that correlate well with significantly compromised neurobehavioral functions compared with sham animals. GSNO treatment of IR not only remarkably enhanced further the expression of HIF-1α, VEGF, and PECAM-1 but also improved functioning compared with IR. The GSNO group also had a higher degree of vessel density than the IR group. Increased expression of VEGF and the degree of tube formation (angiogenesis) by GSNO were reduced after the inhibition of HIF-1α by 2-ME in an endothelial cell culture model. 2-ME treatment of the GSNO group also blocked not only GSNO’s effect of reduced infarct volume, decreased neuronal loss, and enhanced expression of PECAM-1 (P<0.001), but also its improvement of motor and neurological functions (P<0.001). Conclusion GSNO stimulates the process of neurorepair, promotes angiogenesis, and aids functional recovery through the HIF-1α-dependent pathway, showing therapeutic and translational promise for stroke.
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Affiliation(s)
- Mushfiquddin Khan
- Department of Pediatrics, Medical University of South Carolina, Charleston, SC, USA
| | - Tajinder S Dhammu
- Department of Pediatrics, Medical University of South Carolina, Charleston, SC, USA
| | - Fumiyo Matsuda
- Department of Pediatrics, Medical University of South Carolina, Charleston, SC, USA ; School of Health Sciences, Kagoshima University, Kagoshima, Japan
| | - Mauhammad Baarine
- Department of Pathology and Laboratory Medicine, Medical University of South Carolina, Charleston, SC, USA
| | - Tejbir Singh Dhindsa
- Department of Pediatrics, Medical University of South Carolina, Charleston, SC, USA
| | - Inderjit Singh
- Department of Pediatrics, Medical University of South Carolina, Charleston, SC, USA
| | - Avtar K Singh
- Department of Pathology and Laboratory Medicine, Medical University of South Carolina, Charleston, SC, USA ; Ralph H Johnson VA Medical Center, Charleston, SC, USA
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Saczko J, Choromańska A, Rembiałkowska N, Dubińska-Magiera M, Bednarz-Misa I, Bar J, Marcinkowska A, Kulbacka J. Oxidative modification induced by photodynamic therapy with Photofrin®II and 2-methoxyestradiol in human ovarian clear carcinoma (OvBH-1) and human breast adenocarcinoma (MCF-7) cells. Biomed Pharmacother 2015; 71:30-6. [DOI: 10.1016/j.biopha.2015.02.008] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2015] [Accepted: 02/09/2015] [Indexed: 01/10/2023] Open
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Solum EJ, Vik A, Hansen TV. Synthesis, cytotoxic effects and tubulin polymerization inhibition of 1,4-disubstituted 1,2,3-triazole analogs of 2-methoxyestradiol. Steroids 2014; 87:46-53. [PMID: 24923521 DOI: 10.1016/j.steroids.2014.05.020] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/14/2014] [Revised: 05/16/2014] [Accepted: 05/25/2014] [Indexed: 11/23/2022]
Abstract
Thirteen 1,4-disubstituted 1,2,3-triazole analogs of 2-methoxyestradiol were prepared and tested for their cytotoxic and tubulin polymerization inhibition effects. Two compounds, 11j and 11k, exhibited anti-proliferative effects at low micromolar concentrations. The two analogs 11j and 11k also inhibited tubulin assembly with IC50 values of 8.1 and 5.9μM, respectively.
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Affiliation(s)
- Eirik Johansson Solum
- School of Pharmacy, Department of Pharmaceutical Chemistry, University of Oslo, PO Box 1068, Blindern, N-0316 Oslo, Norway
| | - Anders Vik
- School of Pharmacy, Department of Pharmaceutical Chemistry, University of Oslo, PO Box 1068, Blindern, N-0316 Oslo, Norway
| | - Trond Vidar Hansen
- School of Pharmacy, Department of Pharmaceutical Chemistry, University of Oslo, PO Box 1068, Blindern, N-0316 Oslo, Norway.
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Schaible EV, Windschügl J, Bobkiewicz W, Kaburov Y, Dangel L, Krämer T, Huang C, Sebastiani A, Luh C, Werner C, Engelhard K, Thal SC, Schäfer MK. 2-Methoxyestradiol confers neuroprotection and inhibits a maladaptive HIF-1α response after traumatic brain injury in mice. J Neurochem 2014; 129:940-54. [DOI: 10.1111/jnc.12708] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2014] [Revised: 02/27/2014] [Accepted: 03/05/2014] [Indexed: 12/17/2022]
Affiliation(s)
- Eva-Verena Schaible
- Department of Anesthesiology; University Medical Center; Johannes Gutenberg-University; Mainz Germany
| | - Julia Windschügl
- Department of Anesthesiology; University Medical Center; Johannes Gutenberg-University; Mainz Germany
| | - Wiesia Bobkiewicz
- Department of Anesthesiology; University Medical Center; Johannes Gutenberg-University; Mainz Germany
| | - Yordan Kaburov
- Department of Anesthesiology; University Medical Center; Johannes Gutenberg-University; Mainz Germany
| | - Larissa Dangel
- Department of Anesthesiology; University Medical Center; Johannes Gutenberg-University; Mainz Germany
- Focus Program Translational Neuroscience (FTN); Johannes Gutenberg-University; Mainz Germany
| | - Tobias Krämer
- Department of Anesthesiology; University Medical Center; Johannes Gutenberg-University; Mainz Germany
| | - Changsheng Huang
- Department of Anesthesiology; University Medical Center; Johannes Gutenberg-University; Mainz Germany
| | - Anne Sebastiani
- Department of Anesthesiology; University Medical Center; Johannes Gutenberg-University; Mainz Germany
| | - Clara Luh
- Department of Anesthesiology; University Medical Center; Johannes Gutenberg-University; Mainz Germany
| | - Christian Werner
- Department of Anesthesiology; University Medical Center; Johannes Gutenberg-University; Mainz Germany
- Focus Program Translational Neuroscience (FTN); Johannes Gutenberg-University; Mainz Germany
| | - Kristin Engelhard
- Department of Anesthesiology; University Medical Center; Johannes Gutenberg-University; Mainz Germany
- Focus Program Translational Neuroscience (FTN); Johannes Gutenberg-University; Mainz Germany
| | - Serge C. Thal
- Department of Anesthesiology; University Medical Center; Johannes Gutenberg-University; Mainz Germany
| | - Michael K.E. Schäfer
- Department of Anesthesiology; University Medical Center; Johannes Gutenberg-University; Mainz Germany
- Focus Program Translational Neuroscience (FTN); Johannes Gutenberg-University; Mainz Germany
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Wolmarans E, Mqoco TV, Stander A, Nkandeu SD, Sippel K, McKenna R, Joubert A. Novel estradiol analogue induces apoptosis and autophagy in esophageal carcinoma cells. Cell Mol Biol Lett 2014; 19:98-115. [PMID: 24563014 PMCID: PMC6275608 DOI: 10.2478/s11658-014-0183-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2013] [Accepted: 01/29/2014] [Indexed: 01/11/2023] Open
Abstract
Cancer is the second leading cause of death in South Africa. The critical role that microtubules play in cell division makes them an ideal target for the development of chemotherapeutic drugs that prevent the hyperproliferation of cancer cells. The new in silico-designed estradiol analogue 2-ethyl-3-O-sulfamoylestra-1,3,5(10)16-tetraene (ESE-16) was investigated in terms of its in vitro antiproliferative effects on the esophageal carcinoma SNO cell line at a concentration of 0.18 μM and an exposure time of 24 h. Polarization-optical differential interference contrast and triple fluorescent staining (propidium iodide, Hoechst 33342 and acridine orange) revealed a decrease in cell density, metaphase arrest, and the occurrence of apoptotic bodies in the ESE-16-treated cells when compared to relevant controls. Treated cells also showed an increase in the presence of acidic vacuoles and lysosomes, suggesting the occurrence of autophagic processes. Cell death via autophagy was confirmed using the Cyto-ID autophagy detection kit and the aggresome detection assay. Results showed an increase in autophagic vacuole and aggresome formation in ESE-16 treated cells, confirming the induction of cell death via autophagy. Cell cycle progression demonstrated an increase in the sub-G1 fraction (indicative of the presence of apoptosis). In addition, a reduction in mitochondrial membrane potential was also observed, which suggests the involvement of apoptotic cell death induced by ESE-16 via the intrinsic apoptotic pathway. In this study, it was demonstrated that ESE-16 induces cell death via both autophagy and apoptosis in esophageal carcinoma cells. This study paves the way for future investigation into the role of ESE-16 in ex vivo and in vivo studies as a possible anticancer agent.
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Affiliation(s)
- Elize Wolmarans
- Department of Physiology, University of Pretoria, Pretoria, South Africa
| | - Thandi V. Mqoco
- Department of Physiology, University of Pretoria, Pretoria, South Africa
| | - Andre Stander
- Department of Physiology, University of Pretoria, Pretoria, South Africa
| | - Sandra D. Nkandeu
- Department of Physiology, University of Pretoria, Pretoria, South Africa
| | - Katherine Sippel
- Department of Biochemistry and Molecular Biology, Baylor College of Medicine, Houston, Texas USA
| | - Robert McKenna
- McKnight Institute, University of Florida, Gainesville, Florida USA
| | - Annie Joubert
- Department of Physiology, University of Pretoria, Pretoria, South Africa
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Wolmarans E, Sippel K, McKenna R, Joubert A. Induction of the intrinsic apoptotic pathway via a new antimitotic agent in an esophageal carcinoma cell line. Cell Biosci 2014; 4:68. [PMID: 25937890 PMCID: PMC4417530 DOI: 10.1186/2045-3701-4-68] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2014] [Accepted: 11/02/2014] [Indexed: 11/29/2022] Open
Abstract
Background 2-Ethyl-3-O-sulphamoyl-estra-1,3,5(10)16-tetraene (ESE-16) is a unique, in silico-designed compound with possible anticancer properties, which were identified in our laboratory. This compound is capable of interfering with microtubule dynamics and is believed to have potential carbonic anhydrase IX inhibiting activity. In this study, it was investigated whether ESE-16 is capable of inducing apoptosis in vitro in the esophageal carcinoma SNO cell line via the intrinsic pathway at a concentration of 0.2 μM with an exposure time of 24 hours. Results Qualitative results were obtained via light microscopy, transmission electron microscopy and confocal microscopy. Results showed hallmarks of apoptosis in the ESE-16-treated cells. In addition, data revealed an increase in the number of ESE-16-treated cells blocked in metaphase. Cell death via apoptosis in the ESE-16-treated cells was confirmed by studying the internal ultrastructure of the cells via transmission electron microscopy, while confocal microscopy revealed abnormal spindle formation and condensed chromatin in ESE-16-treated cells, thus confirming metaphase block. Quantitative results were obtained via flow cytometry and spectrophotometry. Cell death via apoptosis in ESE-16-treated cells was quantitatively confirmed by the Annexin V-FITC apoptosis detection assay. Flow cytometry and spectrophotometry revealed dissipation of mitochondrial membrane potential and an increase in superoxide levels in the ESE-16-treated cells when compared to the relevant controls. Both initiator caspase 9 and effector caspase 3 activities were increased, which demonstrates that ESE-16 causes cell death in a caspase-dependent manner. Conclusions This was the first in vitro study conducted to investigate the action mechanism of ESE-16 on an esophageal carcinoma cell line. The results provided valuable information on the action mechanism of this potential anticancer agent. It can be concluded that the novel in silico-designed compound exerts an anti-proliferative effect on the esophageal carcinoma SNO cell line by disrupting microtubule function resulting in metaphase block. This culminates in apoptotic cell death via the intrinsic apoptotic pathway. This research provided cellular targets warranting in vivo assessment of ESE-16’s potential as an anticancer agent.
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Affiliation(s)
- Elize Wolmarans
- Department of Physiology, University of Pretoria, Pretoria, South Africa
| | - Katherine Sippel
- Department of Biochemistry and Molecular Biology, Baylor College of Medicine, Houston, Texas USA
| | - Robert McKenna
- McKnight Institute, University of Florida, Gainesville, Florida USA
| | - Annie Joubert
- Department of Physiology, University of Pretoria, Pretoria, South Africa
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Kohen P, Henríquez S, Rojas C, Gerk PM, Palomino WA, Strauss JF, Devoto L. 2-Methoxyestradiol in the human corpus luteum throughout the luteal phase and its influence on lutein cell steroidogenesis and angiogenic activity. Fertil Steril 2013; 100:1397-404. [DOI: 10.1016/j.fertnstert.2013.07.1980] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2013] [Revised: 07/04/2013] [Accepted: 07/18/2013] [Indexed: 10/26/2022]
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Theron AE, Nolte EM, Lafanechère L, Joubert AM. Molecular crosstalk between apoptosis and autophagy induced by a novel 2-methoxyestradiol analogue in cervical adenocarcinoma cells. Cancer Cell Int 2013; 13:87. [PMID: 23977838 PMCID: PMC3766685 DOI: 10.1186/1475-2867-13-87] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2013] [Accepted: 08/23/2013] [Indexed: 12/24/2022] Open
Abstract
Background 2-Methoxyestradiol has been shown to induce both autophagy and apoptosis in various carcinogenic cell lines. Although a promising anti-cancer agent, it has poor bioavailability and rapid in vivo metabolism which decreases its efficiency. In order to improve 2-methoxyestradiol’s anti-proliferative properties, a novel 2-methoxyestradiol analogue, 2-ethyl-3-O-sulphamoyl-estra-1,3,5 (10)16-tetraene (ESE-16), was previously in silico-designed in our laboratory. This study investigated ESE-16 for its anti-proliferative potential on a cervical adenocarcinoma cell (HeLa) cell line. Additionally, the possible intracellular crosstalk mechanisms between the two types of cell death were investigated. Methods and results HeLa cells exposed to 0.5 μM ESE-16 for 24 hours showed morphological evidence of both apoptotic and autophagic death pathways as assessed by polarization-optical transmitted light differential interference contrast microscopy, fluorescent microscopy and transmission electron microscopy. Flow cytometric cyclin B1 quantification revealed induction of programmed cell death after halting cell cycle progression in metaphase. Confocal microscopy demonstrated that ESE-16 caused microtubule fragmentation. Flow cytometric analysis of cell cycle progression and phosphatidylserine flip determination confirmed induction of apoptosis. Moreover, an increase in aggresome formation and microtubule-associated protein light chain, LC3, was demonstrated indicative of autophagy. Both caspase 8 and 3 were upregulated in a spectrophotometric analysis, indicating the involvement of the extrinsic pathway of apoptotic induction. Conclusions We conclude that the novel in silico-designed compound, ESE-16, exerts its anti-proliferative effect on the tumorigenic human epithelial cervical (HeLa) cells by sequentially targeting microtubule integrity, resulting in a metaphase block, causing induction of both autophagic and apoptotic cell death via a crosstalk mechanism that involves the extrinsic pathway. Future investigations will expand on signal transduction pathways involved in both apoptosis and autophagy for assessment of ESE-16 effects on microtubule dynamic instability parameters.
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Affiliation(s)
- Anne E Theron
- Department of Physiology, Faculty of Health Sciences, University of Pretoria, Private Bag X323, Arcadia, 0007 Gauteng, Pretoria, South Africa.
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Yao H, Zhang M, Zeng W, Zeng X, Zhang Z. Sensitive determination of 2-methoxyestradiol in pharmaceutical preparations and serum samples using flow injection chemiluminescence. LUMINESCENCE 2013; 29:261-5. [PMID: 23836511 DOI: 10.1002/bio.2538] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2012] [Revised: 03/18/2013] [Accepted: 04/27/2013] [Indexed: 11/08/2022]
Abstract
A rapid and sensitive flow injection chemiluminescence (FI-CL) method is described for the determination of 2-methoxyestradiol (2ME) based on enhancement of the CL intensity from a potassium ferricyanide-calcein system in sodium hydroxide medium. The optimum conditions for the CL emission were investigated. Under optimized conditions, a linear calibration graph was obtained over the range 1.0 × 10(-8) to 1.0 × 10(-6) mol/L (r = 0.998) 2ME with a detection limit (3σ) of 5.4 × 10(-9) mol/L. The relative standard deviation (RSD) for 5.0 × 10(-7) mol/L 2ME was 1.7%. As a preliminary application, the proposed method was successfully applied to the determination of 2ME in injection solutions and serum samples. The possible CL mechanism was also proposed.
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Affiliation(s)
- Hanchun Yao
- School of Pharmaceutical Science, Zhengzhou University, Zhengzhou, China
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Li HH, Zhao YJ, Li Y, Dai CF, Jobe SO, Yang XS, Li XF, Patankar MS, Magness RR, Zheng J. Estradiol 17β and its metabolites stimulate cell proliferation and antagonize ascorbic acid-suppressed cell proliferation in human ovarian cancer cells. Reprod Sci 2013; 21:102-11. [PMID: 23757313 DOI: 10.1177/1933719113492211] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Estradiol 17β (E2β) and ascorbic acid (AA) have been implicated in cancer progression. However, little is known about the actions of biologically active metabolites of E2β, 2-hydroxyestradiol (2OHE2), 4-hydroxyestradiol (4OHE2), 2-methoxyestradiol (2ME2), and 4-methoxyestradiol (4ME2) synthesized sequentially by cytochrome P450, family 1, subfamily A (CYP1A1) and B (CYP1B1), polypeptide 1, and catechol-O-methyltransferase (COMT) on ovarian cancer. Herein, we examined the expression of CYP1A1, CYP1B1, COMT, and estrogen receptor α (ERα) and β (ERβ) in human ovarian surface epithelial (IOSE-385) and cancer cell lines (OVCAR-3, SKOV-3, and OVCA-432). We also investigated the roles of E2β, 2OHE2, 4OHE2, 2ME2, and 4ME2 in cell proliferation, and their interactive effects with AA on ovarian cells. We found the expression of CYP1A1, CYP1B1, COMT, ERα, and ERβ in most cell lines tested. Treating cells with physiological concentrations of E2β and its metabolites promoted (13%-42% of the control) IOSE-385 and OVCAR-3 proliferation. The ER blockade inhibited IOSE-385 (∼76%) and OVCAR-3 (∼87%) proliferative response to E2β but not to its metabolites. The ERα blockade inhibited (∼85%) E2β-stimulated OVCAR-3 proliferation, whereas ERβ blockade attenuated (∼83%) E2β-stimulated IOSE-385 proliferation. The AA at ≥250 μmol/L completely inhibited serum-stimulated cell proliferation in all cell lines tested; however, such inhibition in IOSE-385, OVCAR-3, and OVCA-432 was partially (∼10%-20%) countered by E2β and its metabolites. Thus, our findings indicate that E2β and its metabolites promote cell proliferation and antagonize the AA-suppressed cell proliferation in a subset of ovarian cancer cells, suggesting that blocking the actions of E2β and its metabolites may enhance AA's antiovarian cancer activity.
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Affiliation(s)
- Hui-Hui Li
- 1Department of Obstetrics and Gynecology, Qilu Hospital, Shandong University, Shandong, China
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Quezada M, Alvarez M, Peña OA, Henríquez S, d' Alençon CA, Lange S, Oliva B, Owen GI, Allende ML. Antiangiogenic, antimigratory and antiinflammatory effects of 2-methoxyestradiol in zebrafish larvae. Comp Biochem Physiol C Toxicol Pharmacol 2013; 157:141-9. [PMID: 23142146 DOI: 10.1016/j.cbpc.2012.10.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/01/2012] [Revised: 10/30/2012] [Accepted: 10/31/2012] [Indexed: 12/13/2022]
Abstract
2-Methoxyestradiol (2ME), an endogenous metabolite of 17β-estradiol, has been previously reported to possess antiangiogenic and antitumor properties. Herein, we demonstrate that the effects of this antiangiogenic steroid can be readily assayed in live zebrafish, introducing a convenient and robust new model system as a screening tool for both single cell and collective cell migration assays. Using the in vitro mammalian endothelial cell line EA.hy926, we first show that cell migration and angiogenesis, as estimated by wound assay and tube formation respectively, are antagonized by 2ME. In zebrafish (Danio rerio) larvae, dose-dependent exposure to 2ME diminishes (1) larval angiogenesis, (2) leukocyte recruitment to damaged lateral line neuromasts and (3) retards the lateral line primordium in its migration along the body. Our results indicate that 2ME has an effect on collective cell migration in vivo as well as previously reported anti-tumorigenic activity and suggests that the molecular mechanisms governing cell migration in a variety of contexts are conserved between fish and mammals. Moreover, we exemplify the versatility of the zebrafish larvae for testing diverse physiological processes and screening for antiangiogenic and antimigratory drugs in vivo.
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Affiliation(s)
- Marisol Quezada
- Departamento de Fisiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
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Drzewiecki BA, Anumanthan G, Penn HA, Tanaka ST, Thomas JC, Adams MC, Brock JW, Pope JC, Matusik RJ, Hayward S, Clayton DB. Modulation of the hypoxic response following partial bladder outlet obstruction. J Urol 2012; 188:1549-54. [PMID: 22910264 DOI: 10.1016/j.juro.2012.02.037] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2011] [Indexed: 10/28/2022]
Abstract
PURPOSE Tissue level hypoxia has been noted in animal models of partial bladder outlet obstruction. The key mechanisms linking hypoxia and obstruction induced bladder dysfunction remain unknown. 2-Methoxyestradiol is a natural derivative of 17β-estradiol and is currently used as an oncologic agent for its ability to regulate the hypoxia pathway. We investigated the ability of 2-methoxyestradiol to modulate the hypoxia response in a mouse model of bladder obstruction. MATERIALS AND METHODS A group of 5 to 6-week-old female C57BL/6 mice underwent oophorectomy and partial bladder outlet obstruction. Obstructed animals received a subcutaneous pellet of cholesterol placebo (7) or 2-methoxyestradiol plus cholesterol (7). Age matched controls underwent oophorectomy only (8). After 4 weeks the bladders of mice with partial bladder outlet obstruction and of unobstructed animals were harvested. Bladder sections (5 μm) were immunostained for Hypoxyprobe™-1, glucose transporter 1 and hypoxia inducible factor-1α. Real-time polymerase chain reaction was performed for hypoxia inducible factor-1α and lysyl oxidase. Statistical analysis was performed using 1-way ANOVA and the Wilcoxon rank sum test. RESULTS Immunostaining for glucose transporter 1 and Hypoxyprobe-1 revealed the presence of tissue hypoxia after partial bladder outlet obstruction. Immunostaining and real-time polymerase chain reaction demonstrated the up-regulation of hypoxia inducible factor-1α in mice after partial bladder outlet obstruction compared to controls (p = 0.0394). Although not statistically significant, a trend toward lower gene expression of hypoxia inducible factor-1α was seen in mice receiving 2-methoxyestradiol compared to placebo (p = 0.0625). Compared to placebo, 2-methoxyestradiol treatment increased lysyl oxidase expression (p = 0.007). CONCLUSIONS Murine partial bladder outlet obstruction resulted in hypoxia and up-regulation of the hypoxia inducible factor-1 pathway. Subcutaneous 2-methoxyestradiol administration attenuated this response and may be a viable tool to study the role of hypoxia after partial bladder outlet obstruction.
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Affiliation(s)
- Beth A Drzewiecki
- Department of Urologic Surgery, Division of Pediatric Urology, Vanderbilt University, Nashville, Tennessee 37232, USA
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Machado-Linde F, Pelegrin P, Sanchez-Ferrer ML, Leon J, Cascales P, Parrilla JJ. 2-Methoxyestradiol in the Pathophysiology of Endometriosis: Focus on Angiogenesis and Therapeutic Potential. Reprod Sci 2012; 19:1018-29. [DOI: 10.1177/1933719112446080] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
| | - Pablo Pelegrin
- Inflammation and Experimental Surgery Group, Centro de Investigación Biomédica en Red en el Área temática de Enfermedades Hepáticas y Digestivas (CIBERehd), Hospital Virgen Arrixaca, Murcia, Spain
| | | | - Josefa Leon
- Department of Hospital Pharmacy, Hospital Morales Meseguer, Murcia, Spain
| | - Pedro Cascales
- Department of General Surgery, Hospital Virgen Arrixaca, Murcia, Spain
| | - Juan J. Parrilla
- Department of Gynecology and Obstetrics, Hospital Virgen Arrixaca, Murcia, Spain
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50
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Lee HT, Park SW, Kim M, Ham A, Anderson LJ, Brown KM, D'Agati VD, Cox GN. Interleukin-11 protects against renal ischemia and reperfusion injury. Am J Physiol Renal Physiol 2012; 303:F1216-24. [PMID: 22859402 DOI: 10.1152/ajprenal.00220.2012] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Renal ischemia reperfusion (IR) injury causes renal tubular necrosis, apoptosis, and inflammation leading to acute and chronic kidney dysfunction. IL-11 is a multifunctional hematopoietic cytokine clinically approved to treat chemotherapy-induced thrombocytopenia. Recent studies suggest that IL-11 also has potent antiapoptotic and antinecrotic properties. In this study, we tested the hypothesis that exogenous IL-11 protects against renal IR injury and determined the mechanisms involved in renal protection. Pretreatment with human recombinant IL-11 (HR IL-11) or with long-acting site-specific polyethylene glycol (PEG)-conjugated human IL-11 analog (PEGylated IL-11) produced partial but significant protection against renal IR injury in mice. In addition, HR IL-11 or PEGylated IL-11 given 30-60 min after IR also provided renal protection in mice. Significant reductions in renal tubular necrosis and neutrophil infiltration as well as tubular apoptosis were observed in mice treated with HR IL-11 or PEGylated IL-11. Furthermore, HR IL-11 or PEGylated IL-11 decreased both necrosis and apoptosis in human proximal tubule (HK-2) cells in culture. Mechanistically, IL-11 increased nuclear translocation of hypoxia-inducible factor-1α (HIF-1α) and induced sphingosine kinase-1 (SK1) expression and activity in HK-2 cells. Moreover, selective HIF-1α inhibitors blocked IL-11-mediated induction of SK1 in HK-2 cells. Finally, HR IL-11 or PEGylated IL-11 failed to protect against renal IR injury in SK1-deficient mice. Together, our data show powerful renal protective effects of exogenous IL-11 against IR injury by reducing necrosis, inflammation, and apoptosis through induction of SK1 via HIF-1α.
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Affiliation(s)
- H Thomas Lee
- Department of Anesthesiology, Anesthesiology Research Laboratories, Columbia University, West 168th St., New York, NY 10032-3784, USA.
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